Abbreviations- M, million; k,
thousand; ly, light years; Temp, temperature; RH, relative
humidity; DP, dew point; NA, not applicable; FOV- field of view;
au- astronomical
units (1 au = distance from Sun to Earth or 93 million miles) |
| Click on the images below to view a larger (1200 x 800) version in a new window. If your screen resolution is less than 1200 x 800, click on the image in the new window to view the full version. |
.jpg)
| NGC 4676A
(left) and NGC 4676B (right), also known as the Mice
Galaxies, are two spiral galaxies 290 Mly from
Earth in the constellation
Coma Berenices. They are in the process of colliding
and will eventually merge into one large galaxy. They are known as the Mice Galaxies
because of their long tails of stars and dust emanating from
each galaxy caused by gravitational forces. Click on the image to see a larger version. |
|
|
|
|
|
Object |
NGC 4676 (Mice
Galaxies) |
| Distance |
290 Mly |
| Constellation |
Coma Berenices |
| Link |
NGC 4676 |
|
|
| Date |
April 2024 (Tucson, AZ) |
| Conditions |
Clear,
50 - 80 F |
| Moon |
Waning gibbous |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STX16803 |
| Luminance |
3 hours; 18 x 10 min, 1 x 1 |
| Red |
3 hours; 18 x 10 min, 2 x 2 |
| Green |
3 hours; 18 x 10 min, 2 x 2 |
| Blue |
3 hours; 18 x 10 min, 2 x 2 |
| HA |
NA |
|
Click
here
to see a zoomed out version. |
.jpg)
| M91 is a barred spiral galaxy
63 Mly from
Earth in the constellation
Coma Berenices. It is part of the Virgo Cluster of
galaxies. It is considered an anemic galaxy because it
has little star formation and gas relative to other galaxies
of its type.
Click on the image to see a larger version. |
|
|
|
|
|
Object |
M91 |
| Distance |
63 Mly |
| Constellation |
Coma Berenices |
| Link |
M91 |
|
|
| Date |
April 2024 (Tucson, AZ) |
| Conditions |
Clear,
50 - 80 F |
| Moon |
Waxing gibbous to waning gibbous |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STX16803 |
| Luminance |
6 hours; 36 x 10 min, 1 x 1 |
| Red |
3 hours; 18 x 10 min, 2 x 2 |
| Green |
3 hours; 18 x 10 min, 2 x 2 |
| Blue |
3 hours; 18 x 10 min, 2 x 2 |
| HA |
NA |
|
|
.jpg)
| M51, commonly
known as the Whirlpool galaxy, is a spiral galaxy 37 Mly
from Earth in the constellation Canes Venatici. The very
pronounced spiral structure of M51 is believed to be the
result of a close interaction with its companion galaxy, NGC
5195 (right), which passed through M51 about 500 - 600
million years ago. Click on the image to see a larger
version. |
|
|
|
|
|
Object |
M51 (Whirlpool
Galaxy) |
| Distance |
37 Mly |
| Constellation |
Canes Venatici |
| Link |
M51 |
|
|
| Date |
April 2024 (Tucson, AZ) |
| Conditions |
Clear,
45 - 80 F |
| Moon |
Waning crescent to waxing crescent |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STX16803 |
| Luminance |
6 hours; 36 x 10 min, 1 x 1 |
| Red |
4 hours; 24 x 10 min, 2 x 2 |
| Green |
4 hours; 24 x 10 min, 2 x 2 |
| Blue |
5 hours; 30 x 10 min, 2 x 2 |
| HA |
NA |
|
Click
here
to see a larger version. |
.jpg)
| NGC 5216
(bottom) and NGC 5218 (top), also
known as Keenan's System and Arp 104, are spiral (5216) and
globular (5218) galaxies 17 Mly from
Earth in the constellation
Ursa Major. They are bridged by a cosmic trail made of
gas, dust, and stars that spans 22,000 ly. The two
galaxies will likely merge into a single galaxy billions of
years from now. Click on the image to see a larger version. |
|
|
|
|
|
Object |
NGC 5216 & 5218 |
| Distance |
17 Mly |
| Constellation |
Ursa Major |
| Link |
Arp 104 |
|
|
| Date |
April 2024 (Tucson, AZ) |
| Conditions |
Clear,
50 - 80 F |
| Moon |
Waxing crescent |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STX16803 |
| Luminance |
4 hours; 24 x 10 min, 1 x 1 |
| Red |
2 hours; 12 x 10 min, 2 x 2 |
| Green |
2 hours; 12 x 10 min, 2 x 2 |
| Blue |
4 hours; 24 x 10 min, 2 x 2 |
| HA |
NA |
|
Click
here
to see a larger version. |
.jpg)
| NGC 4216
(center left) is a metal-rich intermediate spiral galaxy 55 Mly from
Earth in the constellation
Virgo. It is one of the largest and brightest galaxies
in the Virgo Cluster of galaxies and is brighter than the
Andromeda galaxy. It is considered an anemic galaxy
because it has low star formation for a galaxy of its type. It
is seen here with two neighboring galaxies NGC 4206 (upper
left) and NGC 4222 (lower left).
Click on the image to see a larger version. |
|
|
|
|
|
Object |
NGC 4216 / 4206
/ 4222 |
| Distance |
55 Mly |
| Constellation |
Virgo |
| Link |
NGC 4216 |
|
|
| Date |
April 2024 (Tucson, AZ) |
| Conditions |
Clear,
50 - 70 F |
| Moon |
Third quarter to waning crescent |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STX16803 |
| Luminance |
4 hours; 24 x 10 min, 1 x 1 |
| Red |
2.7 hours; 16 x 10 min, 2 x 2 |
| Green |
2.7 hours; 16 x 10 min, 2 x 2 |
| Blue |
2.7 hours; 16 x 10 min, 2 x 2 |
| HA |
NA |
|
|
.jpg)
| M77, also
known as the Squid Galaxy, is a barred spiral galaxy 47 Mly from
Earth in the constellation
Cetus. It has tightly wound spiral arms and an outer
ring. It is an active galaxy with a supermassive black
hole at its core.
Click on the image to see a larger version. |
|
|
|
|
|
Object |
M77 (Squid
Galaxy) |
| Distance |
47 Mly |
| Constellation |
Cetus |
| Link |
M77 |
|
|
| Date |
November/December, 2023 (Tucson, AZ) |
| Conditions |
Clear,
50 - 70 F |
| Moon |
First quarter to third quarter |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STX16803 |
| Luminance |
5 hours; 30 x 10 min, 1 x 1 |
| Red |
3 hours; 18 x 10 min, 2 x 2 |
| Green |
3 hours; 18 x 10 min, 2 x 2 |
| Blue |
3 hours; 18 x 10 min, 2 x 2 |
| HA |
NA |
|
|
.jpg)
| M64, also
known as the Black Eye Galaxy, is spiral galaxy 17 Mly from
Earth in the constellation
Coma Berenices. A dark band of absorbing dust in front
of its bright core resembles a black eye, hence, its name.
M64 contains about 100 million stars and spans about 54 kly,
which is about one-third the size of our Milky Way.
Click on the image to see a larger version. |
|
|
|
|
|
Object |
M64 (Black Eye
Galaxy) |
| Distance |
17 Mly |
| Constellation |
Coma Berenices |
| Link |
M64 |
|
|
| Date |
May 24 - 28, 2023 (Tucson, AZ) |
| Conditions |
Clear,
60 - 80 F |
| Moon |
Waxing crescent to waxing gibbous |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STX16803 |
| Luminance |
5 hours; 30 x 10 min, 1 x 1 |
| Red |
3 hours; 18 x 10 min, 2 x 2 |
| Green |
3 hours; 18 x 10 min, 2 x 2 |
| Blue |
3 hours; 18 x 10 min, 2 x 2 |
| HA |
NA |
|
Click
here
to see a larger version. |
.jpg)
| NGC 2775 is
an unbarred spiral galaxy 67 Mly from
Earth in the constellation
Cancer. It has a prominent outer ring structure and
flocculent tightly wound spiral arms. Star formation
is taking place in the outer ring but its nucleus is devoid
of star formation.
Click on the image to see a larger version. |
|
|
|
|
|
Object |
NGC 2775 |
| Distance |
67 Mly |
| Constellation |
Cancer |
| Link |
NGC 2775 |
|
|
| Date |
January 25 - 28, 2023 (Tucson, AZ) |
| Conditions |
Clear,
40 - 70 F |
| Moon |
Waxing and waning crescent |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STX16803 |
| Luminance |
8 hours; 48 x 10 min, 1 x 1 |
| Red |
7 hours; 42 x 10 min, 2 x 2 |
| Green |
7 hours; 42 x 10 min, 2 x 2 |
| Blue |
7 hours; 42 x 10 min, 2 x 2 |
| HA |
NA |
|
Click
here
to see a larger version. |
.jpg)
| M74, also
known as the Phantom Galaxy, is a large spiral galaxy 30 Mly from
Earth in the constellation
Pisces. It contains two clearly defined spiral arms
and is an example of a grand design spiral galaxy. It
is thought to contain an intermediate-mass black hole at its
core. Several supernova have been observed within this
galaxy.
Click on the image to see a larger version. |
|
|
|
|
|
Object |
M74 (Phantom
Galaxy) |
| Distance |
30 Mly |
| Constellation |
Pisces |
| Link |
M74 |
|
|
| Date |
October/November, 2022 (Tucson, AZ) |
| Conditions |
Clear,
40 - 70 F |
| Moon |
Waxing and waning crescent |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STX16803 |
| Luminance |
8 hours; 48 x 10 min, 1 x 1 |
| Red |
7 hours; 42 x 10 min, 2 x 2 |
| Green |
7 hours; 42 x 10 min, 2 x 2 |
| Blue |
7 hours; 42 x 10 min, 2 x 2 |
| HA |
NA |
|
|
.jpg)
| Stephan's
Quintet (bottom center, click
here to see
a zoomed in image and
here to see an annotated image) consists of five
galaxies (NGC 7317, 7318A/B, 7319, 7320C, 7320), the first four of
which are 210 to 340 Mly from Earth in the constellation
Pegasus. NGC 7320 (blue galaxy on left in quintet) is in the
foreground about 39 Mly from Earth. Also seen is the
unbarred spiral galaxy NGC 7331 (top right) 40 Mly from
Earth. Several arcs of intergalatic gas caused by
shock of colliding gas can be seen within the quintet.
Click on the image to see a larger version. |
|
|
|
|
| Object |
Stephan's
Quintet |
| Distance |
210 -
340 Mly |
| Constellation |
Pegasus |
| Link |
Stephan's Quintet |
|
|
| Date |
September 17 & 18, 2022 (Tucson, AZ) |
| Conditions |
Clear,
70 - 80 F |
| Moon |
Third quarter |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STX16803 |
| Luminance |
2 hours; 12 x 10 min, 1 x 1 |
| Red |
2 hours; 12 x 10 min, 2 x 2 |
| Green |
2 hours; 12 x 10 min, 2 x 2 |
| Blue |
2 hours; 12 x 10 min, 2 x 2 |
| HA |
NA |
|
|
%20(450%20x%20450).jpg)
| Abell 1656,
also known as the Coma Galaxy Cluster, is a large cluster of
over 1,000 galaxies 330 Mly from Earth in the constellation
Coma Berenices. Most of the galaxies are elliptical
with NGC 4874 and NGC 4889 being the most prominent
(center). The Coma Cluster is one of the first places
where dark matter was discovered by Fritz Zwicky.
Click on the image to see a larger version. |
|
|
|
|
| Object |
Coma
Galaxy Cluster (Abell 1696) |
| Distance |
330 Mly |
| Constellation |
Coma Berenices |
| Link |
Coma
Galaxy Cluster (Abell 1656) |
|
|
| Date |
May 05 - 08, 2022 (Tucson, AZ) |
| Conditions |
Clear,
60 - 80 F |
| Moon |
Waxing crescent |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STX16803 |
| Luminance |
9 hours; 54 x 10 min, 1 x 1 |
| Red |
1 hour; 6 x 10 min, 2 x 2 |
| Green |
1 hour; 6 x 10 min, 2 x 2 |
| Blue |
1 hour; 6 x 10 min, 2 x 2 |
| HA |
NA |
|
Click
here
to see an annotated image. |
.jpg)
| NGC
4725 is an intermediate barred spiral galaxy 40 Mly from Earth in the constellation
Coma Berenices. It is the brightest galaxy in the
Coma I Group. NGC 4725 arms are warped due to its
gravitational interaction
with the nearby spiral galaxy NGC 4747 (upper left), which
is 370 kly away. NGC 4725 has a supermassive black
hole at its core. Click on the image to see a larger
version. |
|
|
|
|
| Object |
NGC
4725 |
| Distance |
40 Mly |
| Constellation |
Coma Berenices |
| Link |
NGC 4725 |
|
|
| Date |
April 28 - May 04, 2022 (Tucson, AZ) |
| Conditions |
Clear,
55 - 75 F |
| Moon |
Waning crescent to waxing crescent |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STX16803 |
| Luminance |
10 hours; 60 x 10 min, 1 x 1 |
| Red |
3 hours; 18 x 10 min, 2 x 2 |
| Green |
3 hours; 18 x 10 min, 2 x 2 |
| Blue |
3 hours; 18 x 10 min, 2 x 2 |
| HA |
NA |
|
Click
here
to see an annotated image. |
.jpg)
| M100 (upper
left) is a
grand design intermediate spiral galaxy 55 Mly from Earth in the constellation
Coma Berenices. It is considered a starburst galaxy
with strongest star formation activity in its core, which is
surrounded by two tightly wound spiral arms. The
galaxy in the lower right is NGC 4312. Click on the
image to see a larger version. |
|
|
|
|
| Object |
M100 |
| Distance |
55 Mly |
| Constellation |
Coma Berenices |
| Link |
M100 |
|
|
| Date |
April 23 - 27, 2022 (Tucson, AZ) |
| Conditions |
Clear,
40 - 60 F |
| Moon |
Third quarter to waning crescent |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STX16803 |
| Luminance |
6 hours; 36 x 10 min, 1 x 1 |
| Red |
3 hours; 18 x 10 min, 2 x 2 |
| Green |
3 hours; 18 x 10 min, 2 x 2 |
| Blue |
3 hours; 18 x 10 min, 2 x 2 |
| HA |
NA |
|
Click
here
to see an annotated image. |
.jpg)
| NGC 4565 is a
giant barred spiral galaxy 40 to 50 Mly from Earth in the constellation
Coma Berenices. It is one of the brightest members of the
Coma I Group and is more luminous than Andromeda, our neighbor
galaxy. NGC 4565 is interacting with several
nearby galaxies including NGC 4562 (upper right).
Click
on the image
to see a larger version. |
|
|
|
|
| Object |
NGC
4565 |
| Distance |
40 - 50 Mly |
| Constellation |
Coma Berenices |
| Link |
NGC
4565 |
|
|
| Date |
March 8 - 11, 2022 (Tucson, AZ) |
| Conditions |
Clear,
40 - 60 F |
| Moon |
Waxing crescent to waxing gibbous |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STX16803 |
| Luminance |
6 hours; 36 x 10 min, 1 x 1 |
| Red |
3 hours; 18 x 10 min, 2 x 2 |
| Green |
3 hours; 18 x 10 min, 2 x 2 |
| Blue |
3 hours; 18 x 10 min, 2 x 2 |
| HA |
NA |
|
Click
here
to see an annotated image. |
.jpg)
| NGC 4298
(right) is a flocculent spiral galaxy 53 Mly from Earth in
the constellation Coma Berenices. It forms a pair and
interacts with NGC 4302 (left), an on-edge spiral galaxy
that is about 36 kly away from NGC 4298. NGC 4302 has a prominent
extended dust lane that is edge-on from our perspective. Click on the image to see a larger
version. |
|
|
|
|
| Object |
NGC 4298 & 4302 |
| Distance |
53 Mly |
| Constellation |
Coma Berenices |
| Link |
NGC
4298 |
|
|
| Date |
March 01 - 07, 2022 (Tucson, AZ) |
| Conditions |
Clear,
40 - 60 F |
| Moon |
Waning crescent to waxing crescent |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STX16803 |
| Luminance |
8 hours; 48 x 10 min, 1 x 1 |
| Red |
3 hours; 18 x 10 min, 2 x 2 |
| Green |
3 hours; 18 x 10 min, 2 x 2 |
| Blue |
3 hours; 18 x 10 min, 2 x 2 |
| HA |
NA |
|
Click
here
to see a larger version. |
.jpg)
| NGC 2903 is an
isolated barred spiral galaxy 30 Mly from Earth in the
constellation Leo. It is a member of the
Virgo Supercluster.
It has moderate to tightly wound spiral arms. There is strong starburst activity near
its core. Click on the image to see a larger version. |
|
|
|
|
| Object |
NGC
2903 |
| Distance |
30 Mly |
| Constellation |
Leo |
| Link |
NGC
2903 |
|
|
| Date |
February 03 & 04, 2022 (Tucson, AZ) |
| Conditions |
Clear,
40 - 60 F |
| Moon |
Waxing crescent |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STX16803 |
| Luminance |
3 hours; 18 x 10 min, 1 x 1 |
| Red |
3 hours; 18 x 10 min, 2 x 2 |
| Green |
3 hours; 18 x 10 min, 2 x 2 |
| Blue |
3 hours; 18 x 10 min, 2 x 2 |
| HA |
NA |
|
Click
here
to see a larger version. |
.jpg)
| The Hickson 44
Group consists of four galaxies including NGC 3185, 3187, 3190,
and 3193. They are
about 80 Mly from Earth in the
constellation Leo. NGC 3185 (lower left) is a barred
spiral galaxy, 3187 (upper right) and 3190 (upper left) are
spiral galaxies, and 3193 (top) is an elliptical galaxy. Gravitational
interactions with other members of the Hickson 44 group have
warped the spiral arms of NGC 3187 and 3190. Click on
the image to see a larger version. |
|
|
|
|
| Object |
Hickson
44 Group |
| Distance |
80 Mly |
| Constellation |
Leo |
| Link |
Hickson 44 |
|
|
| Date |
January 23 - 25, 2022 (Tucson, AZ) |
| Conditions |
Clear,
40 - 60 F |
| Moon |
Waning gibbous to third quarter |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STX16803 |
| Luminance |
8 hours; 48 x 10 min, 1 x 1 |
| Red |
3 hours; 18 x 10 min, 2 x 2 |
| Green |
3 hours; 18 x 10 min, 2 x 2 |
| Blue |
3 hours; 18 x 10 min, 2 x 2 |
| HA |
NA |
|
Click
here
to see an annotated image. |
.jpg)
| M104, also
known as the Sombrero galaxy, is 31 Mly from Earth
in the constellation Virgo. It is a member of the
Virgo II Group, which is part of the
Virgo Supercluster.
It has a bright nucleus, a large central bulge, and a
prominent dust lane in its outer disk, which is edge-on from
our perspective. There is a supermassive black hole at
its core. Click on the image to see a larger version. |
|
|
|
|
| Object |
M104 (Sombrero
Galaxy) |
| Distance |
31 Mly |
| Constellation |
Virgo |
| Link |
M104 |
|
|
| Date |
January 20 - 22, 2022 (Tucson, AZ) |
| Conditions |
Clear,
40 - 55 F |
| Moon |
Waning gibbous |
| Seeing/ |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STX16803 |
| LLuminance |
2 hours; 12 x 10 min, 1 x 1 |
| Red |
1 hour; 6 x 10 min, 2 x 2 |
| Green |
1 hour; 6 x 10 min, 2 x 2 |
| Blue |
1 hour; 6 x 10 min, 2 x 2 |
| HA/ |
NA |
|
|
.jpg)
| IC 342 is a spiral galaxy
11 Mly from Earth in the
constellation Camelopardalis. IC 342 is relatively
close, large and bright but because it is located near the
plane of our galactic equator (as evident by the number of
stars in the field of view) it is obscured by galactic dust.
Hence, it has been nicknamed "The Hidden Galaxy".
Click on the image to see a larger version. |
|
|
|
|
| Object |
IC 342 (The
Hidden Galaxy) |
| Distance |
11 Mly |
| Constellation |
Camelopardalis |
| Link |
IC 342 |
|
|
| Date |
January 19 - 21, 2022 (Tucson, AZ) |
| Conditions |
Clear,
40 - 60 F |
| Moon |
Full moon to waxing gibbous |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STX16803 |
| Luminance |
4 hours; 24 x 10 min, 1 x 1 |
| Red |
2.5 hours; 15 x 10 min, 2 x 2 |
| Green |
2.5 hours; 15 x 10 min, 2 x 2 |
| Blue |
2.5 hours; 15 x 10 min, 2 x 2 |
| HA |
NA |
|
Click
here
to see a larger version. |
.jpg)
| M81, also
known as Bodes galaxy, is a spiral galaxy 12 Mly from Earth in the
constellation Ursa Major. M81 has a lot of
interstellar dust in its spiral arms that is associated with
star formation, many of which are hot blue stars. Its center contains a supermassive black hole with a mass
about 70 million times that of our sun. Click on the
image to see a larger version. |
|
|
|
|
| Object |
M81 (Bodes
Galaxy) |
| Distance |
12 Mly |
| Constellation |
Ursa Major |
| Link |
M81 |
|
|
| Date |
January 04 - 06, 2022 (Tucson, AZ) |
| Conditions |
Clear,
50 - 60 F |
| Moon |
Waxing crescent |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STX16803 |
| Luminance |
6 hours; 36 x 10 min, 1 x 1 |
| Red |
2 hours; 12 x 10 min, 2 x 2 |
| Green |
2 hours; 12 x 10 min, 2 x 2 |
| Blue |
2 hours; 12 x 10 min, 2 x 2 |
| HA |
NA |
|
|
.jpg)
| M81 (bottom
left) and M82 (top right), also known as Bodes and the
Cigar galaxies, are 12 Mly from Earth in the constellation
Ursa Major. M81 is a spiral galaxy that contains many star
forming regions (pink). M82 has an irregular shape
probably due to its gravitational interaction with M81.
Superwinds of hydrogen gas caused by massive stars and
supernova explosions can be seen emanating from its center.
Click on the image to see a larger version. |
|
|
Object |
M81 & M82 (Bodes
& Cigar Galaxies) |
| Distance |
12 Mly |
| Constellation |
Ursa Major |
| Link |
M81 & M82 |
|
|
| Date |
February 05 & 06, 2022 (Tucson, AZ) |
| Conditions |
Clear,
40 - 60 F |
|
Moon |
Waxing crescent |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STX16803 |
| Luminance |
3.5 hours; 21 x 10 min, 1 x 1 |
| Red |
2 hours;
12 x 10 min, 2 x 2 |
| Green |
2 hours;
12 x 10 min, 2 x 2 |
| Blue |
2 hours;
12 x 10 min, 2 x 2 |
| HA |
NA |
|
Click
here
to see a larger version. |
.jpg)
| M31, also
known as the Andromeda galaxy, is the nearest large galaxy
to the Milky Way approximately 2.5 Mly from Earth in the
constellation Andromeda. M31 spans 3 to 4 degrees in
the night sky (6 to 8 moon diameters) and is estimated to
contain 1 trillion stars. It will collide with the
Milky Way in 4 to 5 billion years. Click on the image
to see a larger version. |
|
|
|
|
| Object |
M31 (Andromeda
Galaxy) |
| Distance |
2.5 Mly |
| Constellation |
Andromeda |
| Link |
M31 |
|
|
| Date |
October 28 - 31, 2021 (Tucson, AZ) |
| Conditions |
Clear,
55 - 75 F |
| Moon |
Third quarter to waning crescent |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
Takahashi TOA130 @ f7.7 |
| CCD camera |
SBIG STL11000M |
| Luminance |
13.3 hours; 40 x 20 min, 1 x 1 |
| Red |
4 hours; 12 x 20 min, 2 x 2 |
| Green |
4 hours; 12 x 20 min, 2 x 2 |
| Blue |
4 hours; 12 x 20 min, 2 x 2 |
| HA |
NA |
|
|
.jpg)
| NGC 2841 is a
flocculent spiral galaxy about
46 Mly from
Earth in the constellation Ursa Major. It's referred
to as flocculent because its arms are patchy and
discontinuous. It has properties similar to our
nearest neighbor the Andromeda galaxy. Click on the
image to see a larger version. |
|
|
|
|
|
Object |
NGC 2841 |
| Distance |
46 Mly |
| Constellation |
Ursa Major |
| Link |
NGC
2841 |
|
|
| Date |
January 09 - 17, 2021 (Tucson, AZ) |
| Conditions |
Clear,
40 - 60 F |
| Moon |
Waning crescent to waxing crescent |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STL11000M |
| Luminance |
13 hours; 39 x 20 min, 1 x 1 |
| Red |
7 hours; 21 x 20 min, 2 x 2 |
| Green |
7 hours; 21 x 20 min, 2 x 2 |
| Blue |
7 hours; 21 x 20 min, 2 x 2 |
| HA |
NA |
|
|
.jpg)
| NGC 4157 is
barred spiral galaxy 36 Mly from
Earth in the constellation
Ursa Major.
This galaxy is seen almost edge-on from Earth but it is
inclined just enough to see its core and several dust lanes.
Several type II supernovae explosions have been observed in
this galaxy. Click on the image to see a larger version. |
|
|
|
|
|
Object |
NGC 4157 |
| Distance |
36 Mly |
| Constellation |
Ursa Major |
| Link |
NGC 4157 |
|
|
| Date |
May 21 - 25, 2020 (Tucson, AZ) |
| Conditions |
Clear,
60 - 80 F |
| Moon |
Waning crescent to waxing crescent |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STL11000M |
| Luminance |
8 hours; 24 x 20 min, 1 x 1 |
| Red |
4 hours; 12 x 20 min, 2 x 2 |
| Green |
4 hours; 12 x 20 min, 2 x 2 |
| Blue |
4 hours; 12 x 20 min, 2 x 2 |
| HA |
NA |
|
Click
here
to see a larger version. |
.jpg)
| NGC 3344 is a
weakly barred spiral galaxy 23 Mly from
Earth in the constellation
Leo Minor. It has moderate to loosely wound spiral arms and
both an inner and outer
ring. It is half the size of our Milky Way.
Click on the image to see a larger version. |
|
|
|
|
|
Object |
NGC 3344 |
| Distance |
23 Mly |
| Constellation |
Leo Minor |
| Link |
NGC 3344 |
|
|
| Date |
April 12 - 16, 2020 (Tucson, AZ) |
| Conditions |
Clear,
50 - 70 F |
| Moon |
Waning gibbous waning crescent |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STL11000M |
| Luminance |
9 hours; 27 x 10 min, 1 x 1 |
| Red |
3 hours; 9 x 20 min, 2 x 2 |
| Green |
3 hours; 9 x 20 min, 2 x 2 |
| Blue |
3 hours; 9 x 20 min, 2 x 2 |
| HA |
NA |
|
Click
here
to see a larger version. |
-%20new.jpg)
| NGC 891 is an
edge-on spiral galaxy approximately 27 Mly from Earth in the
constellation Andromeda. The many filamentary patterns
seen in the dusty disk (best seen in larger image) may be
the result of supernova explosions that threw interstellar
dust out from the disk and into the halo. NGC 891 is
similar in size and structure to our Milky Way. Click
on the image to see a larger version. |
|
|
|
|
| Object |
NGC 891 |
| Distance |
27 Mly |
| Constellation |
Andromeda |
| Link |
NGC 891 |
|
|
| Date |
November 11 - 25, 2017 (Tucson, AZ) |
| Conditions |
Clear,
55 - 78 F |
| Moon |
Third quarter to first quarter |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STL11000M |
| Luminance |
30.7 hours; 92 x 20 min, 1 x 1 |
| Red |
4 hours; 12 x 20 min, 2 x 2 |
| Green |
4 hours; 12 x 20 min, 2 x 2 |
| Blue |
4 hours; 12 x 20 min, 2 x 2 |
| HA |
NA |
|
Click
here
to see a larger version. |
.jpg)
| NGC 6946 is an
intermediate spiral galaxy approximately 22 Mly from Earth in the constellations
Cepheus & Cygnus. From the vantage point of Earth, NGC 6946 is highly obscurred by interstellar matter because it
lies in the Milky Way's galactic plane. In the past
century, 10 supernova have been observed in this galaxy.
Click on the image to see a larger version. |
|
| Object |
NGC 6946 |
| Distance |
22 Mly |
| Constellation |
Cepheus & Cygnus |
| Link |
NGC 6946 |
|
|
| Date |
October 13 - 28, 2017 (Tucson, AZ) |
| Conditions |
Clear,
55 - 80 F |
|
Moon |
Waning gibbous to first quarter |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STL11000M |
| Luminance |
25 hours; 75 x 20 min, 1 x 1 |
| Red |
3 hours;
9 x 20 min, 2 x 2 |
| Green |
3 hours;
9 x 20 min, 2 x 2 |
| Blue |
3 hours;
9 x 20 min, 2 x 2 |
| HA |
NA |
|
Click
here
to see a larger version. |
.jpg)
| NGC 2403 is an
intermediate spiral galaxy approximately 8 Mly from Earth in the constellation
Camelopardalis. It is an outlying member of the M81
group and resembles M33 (see below). NGC 2403 contains numerous
star-forming HII regions. Click on the image to see a
larger version. |
|
| Object |
NGC 2403 |
| Distance |
8 Mly |
| Constellation |
Camelopardalis |
| Link |
NGC 2403 |
|
|
| Date |
October 13 - 28, 2017 (Tucson, AZ) |
| Conditions |
Clear,
55 - 80 F |
|
Moon |
Waning gibbous to first quarter |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STL11000M |
| Luminance |
15 hours; 45 x 20 min, 1 x 1 |
| Red |
2 hours;
6 x 20 min, 2 x 2 |
| Green |
2 hours;
6 x 20 min, 2 x 2 |
| Blue |
2 hours;
6 x 20 min, 2 x 2 |
| HA |
NA |
|
Click
here
to see a larger version. |
.jpg)
| M94 is 16 Mly from Earth in the constellation
Canes Venatici. It is a barred spiral galaxy that has
two rings around it (difficult to resolve in this image).
The inner ring is the site of strong star burst formation.
The outer ring is also active in star formation. Click
on the image to see a larger version. |
|
| Object |
M94 |
| Distance |
16 Mly |
| Constellation |
Canes Venatici |
| Link |
M94 |
|
|
| Date |
April 02 - May 02, 2017 (Tucson, AZ) |
| Conditions |
Clear,
55 - 80 F |
|
Moon |
Waxing crescent to waxing crescent |
| Seeing |
2.4 - 3.7 arc-sec
(mean 2.96 arc-sec) |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STL11000M |
| Luminance |
26 hours; 79 x 20 min, 1 x 1 |
| Red |
4 hours;
12 x 20 min, 2 x 2 |
| Green |
4 hours;
12 x 20 min, 2 x 2 |
| Blue |
4 hours;
12 x 20 min, 2 x 2 |
| HA |
NA |
|
Click
here
to see a larger version. |
.jpg)
| M63, also
known as the Sunflower galaxy, is 37 Mly from Earth in the
constellation Canes Venatici. It is ~100
kly across and has many short spiral arms that are streaked
with cosmic dust lanes and dotted with pink star forming
regions. M63 belongs to the M51 (see
below) group of galaxies. Click on the image to see a
larger version. |
|
|
Object |
M63 (Sunflower Galaxy) |
| Distance |
37 Mly |
| Constellation |
Canes Venatici |
| Link |
M63 |
|
|
| Date |
April 16 - 18, 2015 (Tucson, AZ) |
| Conditions |
Clear,
50 - 60 F |
| Moon |
Waning crescent to new
moon |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STL11000M |
| Luminance |
6 hours, 36 x 10 min, 1 x 1 |
| Red |
3 hours, 18 x 10 min, 2 x 2 |
| Green |
3 hours, 18 x 10 min, 2 x 2 |
| Blue |
3 hours, 18 x 10 min, 2 x 2 |
| HA |
NA |
| Click
here
to see a larger version. |
.jpg)
| NGC 4038/4039, also
known as the Antennae galaxies, are two colliding galaxies about
45 Mly from
Earth in the constellation Corvus. The two galaxies
were separate 1.2 billion years ago and began colliding
about 600 - 900 million years ago. The collision
causes rapid star formation. Eventually, they will
become one galaxy. Click on the image to see a larger
version. |
|
| Object |
NGC 4038/4039 (Antennae Galaxies) |
| Distance |
45 Mly |
| Constellation |
Corvus |
| Link |
Antennae Galaxies |
|
|
| Date |
March 23 - 26, 2015 (Tucson, AZ) |
| Conditions |
Mostly clear, 60 - 70 F |
| Moon |
Waxing crescent
to first quarter |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STL11000M |
| Luminance |
4 hours, 24 x 10 min, 1 x 1 |
| Red |
2 hours,
12 x 10 min, 2 x 2 |
| Green |
2 hours,
12 x 10 min, 2 x 2 |
| Blue |
2 hours,
12 x 10 min, 2 x 2 |
| HA |
NA |
|
Click
here
to see a larger version. |
.jpg)
| NGC 253, also
known as the Sculptor galaxy, is an intermediate spiral galaxy about
10 Mly from
Earth in the constellation Sculptor. It is a starburst
galaxy, meaning it is undergoing a period of intense
star formation. It is one of
the brightest galaxies in the night sky. Click on the
image to see a larger version. |
|
| Object |
NGC 253 (Sculptor Galaxy) |
| Distance |
10 Mly |
| Constellation |
Sculptor |
| Link |
NGC 253 |
|
|
| Date |
November 26 - 29, 2014 (Tucson, AZ) |
| Conditions |
Mostly clear, 50 - 60 F |
| Moon |
Waxing crescent
to first quarter |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STL11000M |
| Luminance |
4 hours, 24 x 10 min, 1 x 1 |
| Red |
80 min,
8 x 10 min, 2 x 2 |
| Green |
80 min,
8 x 10 min, 2 x 2 |
| Blue |
80 min,
8 x 10 min, 2 x 2 |
| HA |
NA |
|
Click
here
to see a larger version. |
.jpg)
NGC 7331, also
known as Caldwell 30, is a spiral galaxy about 40 Mly from
Earth in the constellation Pegasus. In most spiral
galaxies, the central bulge rotates in the same direction as the disk.
The bulge in NGC 7331 is rotating in the opposite
direction. Several other galaxies much
further away can also be seen in the field of view.
Click on the image to see a larger version.
|
|
| Object |
NGC 7331 |
| Distance |
40 Mly |
| Constellation |
Pegasus |
| Link |
NGC 7331 |
|
|
| Date |
November 22 - 25, 2014 (Tucson, AZ) |
| Conditions |
Mostly clear, 50 - 60 F |
| Moon |
New moon to waxing crescent |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STL11000M |
| Luminance |
7 hours; 21 x 20 min, 1 x 1 |
| Red |
3 hours; 9 x 20 min, 2 x 2 |
| Green |
3 hours; 9 x 20 min, 2 x 2 |
| Blue |
3 hours; 9 x 20 min, 2 x 2 |
| HA |
NA |
|
Click
here
to see a larger version. |
.jpg)
NGC 5033 is
a Seyfert galaxy 38 - 60 Mly from Earth in the constellation
Canes Venatici. It has a bright, active nucleus thought to contain a supermassive black hole. Some
of the arms are warped indicating a recent interaction with
another galaxy. Click on the image to see a larger
version.
|
|
| Object |
NGC 5033 |
| Distance |
38 - 60 Mly |
| Constellation |
Canes Venatici |
| Link |
NGC 5033 |
|
|
| Date |
March
10 - 22, 2013 (Tucson, AZ) |
| Conditions |
Mostly clear, 50 - 60 F |
| Moon |
Waxing
crescent to waning gibbous |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STL11000M |
| Luminance |
17 hours; 51 x 20 min, 1 x 1 |
| Red |
6 hours; 15 x 20 min, 2 x 2 |
| Green |
6 hours; 15 x 20 min, 2 x 2 |
| Blue |
8 hours; 12 x 20 min, 2 x 2 |
| HA |
NA |
|
Click
here
to see a larger version. |
.jpg)
NGC 3628 is 35 Mly from Earth in the constellation
Leo. It is a member of the Leo Triplet, which includes
M65 and M66. NGC 3628 was discovered in 1784 by William Hershel.
From our perspective, NGC 3628 is seen edge-on. Its
dust lane and ends are distorted by its gravitational
interaction with M65 and M66. Click on the image to
see a larger version.
|
|
| Object |
NGC 3628 |
| Distance |
35 Mly |
| Constellation |
Leo |
| Link |
NGC 3628 |
|
|
| Date |
February
10 - March 13, 2013 (Tucson, AZ) |
| Conditions |
Mostly clear, 50 - 70 F |
| Moon |
New moon - new moon |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STL11000M |
| Luminance |
16.7 hours; 50 x 20 min, 1 x 1 |
| Red |
5 hours; 15 x 20 min, 2 x 2 |
| Green |
5 hours; 15 x 20 min, 2 x 2 |
| Blue |
4 hours; 12 x 20 min, 2 x 2 |
| HA |
NA |
|
Click
here
to see a larger version. |
.jpg)
| NGC 3521 is 35 Mly from Earth in the constellation
Leo. It contains many star forming regions (pink) and
clusters of young, blue stars. It is embedded in
gigantic bubble-like shells (see
here), which are probably tidal debris and streams of
stars torn from satellite galaxies that have undegone
mergers with NGC 3521 in the past. Click on the image
to see a larger version. |
|
| Object |
NGC 3521 |
| Distance |
35 Mly |
| Constellation |
Leo |
| Link |
NGC 3521 |
|
|
| Date |
March 28 & 29, 2012 (Tucson, AZ) |
| Conditions |
Clear, Temp- 60 F, RH- 20%, DP- 23 F |
| Moon/ |
Waning crescent |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STL11000M |
| Luminance |
7 hours; 21 x 20 min, 1 x 1 |
| Red |
1 hour; 3 x 20 min, 2 x 2 |
| Green |
1 hour; 3 x 20 min, 2 x 2 |
| Blue |
1 hour; 3 x 20 min, 2 x 2 |
| HA |
NA |
|
Click
here
to see a larger version. |
.jpg)
NGC 5907 (Splinter
Galaxy) is 50 Mly from Earth in the constellation
Draco. It is a member of the NGC 5866
group and was discovered in 1788 by William Hershel.
NGC 5907 is surrounded by
tidal star streams (can be seen
here) that are probably the trail of a dwarf galaxy that
was torn apart and merged with it. Click on the image
to see a larger version.
|
|
| Object |
NGC 5907 (Splinter Galaxy) |
| Distance |
50 Mly |
| Constellation |
Draco |
| Link |
NGC 5907 |
|
|
| Date |
March 16 - 23, 2012 (Tucson, AZ) |
| Conditions |
Clear, Temp- 50 F, RH- 20%, DP- 23 F |
| Moon |
Third quarter (03/16) to
new moon (03/23) |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STL11000M |
| Luminance |
10 hours; 30 x 20 min, 1 x 1 |
| Red |
4 hours; 12 x 20 min, 2 x 2 |
| Green |
4 hours; 12 x 20 min, 2 x 2 |
| Blue |
4 hours; 12 x 20 min, 2 x 2 |
| HA |
NA |
|
Click
here
to see a larger version. |
.jpg)
| M82 (Cigar
Galaxy) is 12 Mly from Earth in the constellation Ursa
Major. It was discovered in 1774 by Johann Bode. Its
irregular shape is probably due to its gravitational
interaction with M81, a neighboring galaxy. Superwinds of
hydrogen gas caused by massive stars and supernova
explosions can be seen emanating from its center.
Click on the image to see a larger version. |
|
| Object |
M82 (Cigar Galaxy) |
| Distance |
12 Mly |
| Constellation |
Ursa Major |
| Link |
M82 |
|
|
| Date |
January 19 & 20, 2012 (Tucson, AZ) |
| Conditions |
Clear, Temp- 43 F, RH- 77%, DP- 37 F |
| Moon |
Waning crescent |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STL11000M |
| Luminance |
2 hours; 12 x 10 min, 1 x 1 |
| Red |
1 hour; 6 x 10 min, 2 x 2 |
| Green |
1 hour; 6 x 10 min, 2 x 2 |
| Blue |
1 hour; 6 x 10 min, 2 x 2 |
| HA |
NA |
|
Click
here
to see a larger version. |
.jpg) |
|
|
| Object |
M33 (Triangulum Galaxy) |
| Distance |
3 Mly |
| Constellation |
Triangulum |
| Link |
M33 |
|
|
| Date |
December 24 & 25, 2011 (Tucson, AZ) |
| Conditions |
Clear, Temp- 45 F, RH- 48%, DP- 23 F |
| Moon |
New
moon |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STL11000M |
| Luminance |
3 hours; 18 x 10 min, 1 x 1 |
| Red |
1 hour; 6 x 10 min, 2 x 2 |
| Green |
1 hour; 6 x 10 min, 2 x 2 |
| Blue |
1 hour; 6 x 10 min, 2 x 2 |
| HA |
NA |
|
Click
here
to see a larger version. |
.jpg) |
|
|
| Object |
M106 |
| Distance |
25 Mly |
| Constellation |
Canes Venatici |
| Link |
M106 |
|
|
| Date |
April 30, 2009 (Tucson, AZ) |
| Conditions |
Clear, Temp- 69 F, RH- 16%, DP- 20 F |
| Moon |
Waxing crescent |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STL11000M |
| Luminance |
2 hours; 8 x 15 min, 1 x 1 |
| Red |
1 hour; 4 x 15 min, 2 x 2 |
| Green |
1 hour; 4 x 15 min, 2 x 2 |
| Blue |
1 hour; 4 x 15 min, 2 x 2 |
| HA |
NA |
|
.jpg) |
|
|
| Object |
M101 (Pinwheel Galaxy) |
| Distance |
27 Mly |
| Constellation |
Ursa Major |
| Link |
M101 |
|
|
| Date |
April 29, 2009 (Tucson, AZ) |
| Conditions |
Clear, Temp- 69 F, RH- 16%, DP- 20 F |
| Moon |
Waxing crescent |
| Seeing |
2.0 - 2.5 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STL11000M |
| Luminance |
1 hour; 4 x 15 min, 1 x 1 |
| Red |
0.5 hours; 2 x 15 min, 2 x 2 |
| Green |
0.5 hours; 2 x 15 min, 2 x 2 |
| Blue |
0.5 hours; 2 x 15 min, 2 x 2 |
| HA |
NA |
|
.jpg)
Click on the
image above to see animation. Shown in the animation are
two superimposed images of M101 taken in April 2009 (frame 1)
and
September 2011 (frame 2). A type Ia supernova
designated SN2011fe (seen in frame 2)
appeared in August/September of 2011 reaching a peak visual
magnitude of ~10.
|
|
|
|
|
Object |
Supernova SN2011fe in M101 |
| Distance |
27 Mly |
| Constellation |
Ursa Major |
| Link |
M101 |
|
|
| Date |
04/29/2009 & 09/25/2011 (Tucson, AZ) |
| Conditions |
Clear |
| Moon |
Waxing (2009) and waning (2011) crescent |
| Seeing |
2.0 - 3.0 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STL11000M |
| Luminance |
4 x 15 min; 1 x 1 (both 2009 & 2011) |
| Red |
NA |
| Green |
NA |
| Blue |
NA |
| HA |
NA |
|
.jpg) |
|
|
| Object |
M65 (right) & M66 (left) |
| Distance |
35 Mly |
| Constellation |
Leo |
| Link |
M65
&
M66 |
|
|
| Date |
April 28, 2009 (Tucson, AZ) |
| Conditions |
Clear, Temp- 69 F, RH- 16%, DP- 20 F |
| Moon |
Waxing crescent |
| Seeing |
2.0 - 2.5 arc-sec |
| Telescope |
RCOS 12.5" Ritchey-Chretien @ f9 |
| CCD camera |
SBIG STL11000M |
| Luminance |
0.5 hours; 2 x 15 min, 1 x 1 |
| Red |
0.5 hours; 2 x 15 min, 2 x 2 |
| Green |
0.5 hours; 2 x 15 min, 2 x 2 |
| Blue |
0.5 hours; 2 x 15 min, 2 x 2 |
| HA |
NA |
|
.jpg) |
|
|
| Object |
NGC 5746 |
| Distance |
95 Mly |
| Constellation |
Virgo |
| Link |
NGC 5746 |
|
|
| Date |
April 20, 2004 (Kitt Peak, Tucson, AZ) |
| Conditions |
Clear, Temp, RH, DP- Unknown |
| Moon |
New moon |
| Seeing |
Unknown |
| Telescope |
RCOS 20" Ritchey-Chretien @ f9 (Kitt Peak) |
| CCD camera |
SBIG ST10XME |
| Luminance |
1 hour; 6 x 10 min, 1 x 1 |
| Red |
10 min; 1 x 10 min, 2 x 2 |
| Green |
10 min; 1 x 10 min, 2 x 2 |
| Blue |
10 min; 1 x 10 min, 2 x 2 |
| HA |
NA |
| Image taken by Adam Block, Svend and Carl Freytag |
.jpg) |
|
|
| Object |
NGC 3359 |
| Distance |
49 Mly |
| Constellation |
Ursa Major |
| Link |
NGC 3359 |
|
|
| Date |
April 19, 2004 (Kitt Peak, Tucson, AZ) |
| Conditions |
Clear, Temp, RH, DP- Unknown |
| Moon |
New moon |
| Seeing |
Unknown |
| Telescope |
RCOS 20" Ritchey-Chretien @ f9 (Kitt Peak) |
| CCD camera |
SBIG ST10XME |
| Luminance |
1.75 hours; 7 x 15 min, 1 x 1 |
| Red |
10 min; 1 x 10 min, 2 x 2 |
| Green |
10 min; 1 x 10 min, 2 x 2 |
| Blue |
10 min; 1 x 10 min, 2 x 2 |
| HA |
NA |
| Image taken by Adam Block, Svend and Carl Freytag |
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