Imaging Projects

In this blog, I will share the results of all of my imaging projects. The newest will be at the top and the oldest will be further down the stack. Going back in time here is interesting - some of my early stuff was pretty rough - but I did not see it that way at the time - I was thrilled to get anything back that looked like an image! Hopefully, you will see how my work has progressed with time!

IC 1848 - The Soul Nebula - 6.8 hours in SHO (and a Change in Horses Mid-Stride!)
Patrick A. Cosgrove Patrick A. Cosgrove

IC 1848 - The Soul Nebula - 6.8 hours in SHO (and a Change in Horses Mid-Stride!)

IC 1848, Better known as The Soul Nebula, is an emission nebula located 6,500 light-years away in the cancellation of Cassiopeia.

This image results from 6.8 hours of narrowband data collected with my Askar FRA400 Astrograph and my ZWO classic ASI1600MM-Pro camera on the nights of Oct 20 and 22 and Nov 23 of 2022.

The first two nights were collected using the IOPtron CEM26 mount, and the third night was collected using a brand new ZWO AM5 Harmonic mount. This was the first time using the AM5, and it did an exceptional job with tracking errors reduced by 400%!

Read More
NGC 281 - The Pacman Nebula - 8 hours in SHO (Fighting a Strange Artifact!)
Patrick A. Cosgrove Patrick A. Cosgrove

NGC 281 - The Pacman Nebula - 8 hours in SHO (Fighting a Strange Artifact!)

NGC 281, better known as the “Pacman” Nebula, is located 9,500 light-years away in the constellation of Cassiopea.

This was the second time I shot this target. This image is the result of 8 hours of narrowband data rendered in the Hubble SHO palette.

This data was collected on my Astro-Physics 130mm f/8.35 APO refractor, and a ZWO ASI2600MM-Pro camera - all mounted on my IOptron CEM 60 Mount.

This image suffered from a strange circular artifact that took the form of nested rings in the corner of the image. Dealing with this caused me to make my background sky a bit darker than I would have preferred, but I think the image has a certain amount of drama and pop because of it!

Read More
Melotte 15 - The Heart of the Heart Nebula (IC 1805) - 5.5 hours of SHO
Patrick A. Cosgrove Patrick A. Cosgrove

Melotte 15 - The Heart of the Heart Nebula (IC 1805) - 5.5 hours of SHO

Melotte 15, better known as the “Heart of the Heart,” is an open cluster with emission and reflection nebulae that creates an interesting structure that can be found in the center of IC 1805 - the Heart Nebula.

This rich region is located about 7,100 light-years from Earth in the constellation of Cassiopea.

This is image is the result of 5.5 hours of narrowband data collected on my William Optics 132mm FLT platform using a ZWO ASI1600MM-Prop camera.

Read More
NGC 7635 - The Bubble Nebula w/M52 - 8.25 hours in SHO - Not Sure I Love it.
Patrick A. Cosgrove Patrick A. Cosgrove

NGC 7635 - The Bubble Nebula w/M52 - 8.25 hours in SHO - Not Sure I Love it.

NGC 7635 - The Bubble Nebula with M52. 8.25 hours in SHO.

This image was shot on my William Optics 132mm FLT APO platform, using a ASI1600MM-Pro Camera and the IOptron CEM60 mount.

The original goal was to do a deeper integration of at least 15 hours - and while the weather would have supported this, I missed two clear nights due to illness.

This image has a very high color and contrast position - almost too high for me, but I disliked the lower contrast and saturation versions more - so this is it. I am not sure I love this image….

Read More
IC 1396A - The Elephant’s Trunk - 7.3 hrs in SHO (a Case of Virus Interuptus)
Patrick A. Cosgrove Patrick A. Cosgrove

IC 1396A - The Elephant’s Trunk - 7.3 hrs in SHO (a Case of Virus Interuptus)

IC 1396A - The Elephants Trunk Nebula is located 2400 light-years away in the constellation of Cepheus. This is my fourth project involving this target - but the first where I used the newer generation ZWO ASI26MM-Pro camera and full narrowband data set at this image scale. My goal here was to collect about 15 hours on target. I only ended up getting 7.3 hours. My usual reason for missing my integration target is weather. Not this time. This time I was hit with a nasty virus and the worst cold of my life! I had to watch two precious clear nights slip away whilst I coughed and hacked away inside in misery….

Read More
NGC 6888 - The Crescent Nebula - 12.9 hours in HOOrgb
Patrick A. Cosgrove Patrick A. Cosgrove

NGC 6888 - The Crescent Nebula - 12.9 hours in HOOrgb

NGC 6888 - The Crescent Nebula is a famous emission nebula located in the constellation of Cygnus. This is my third time imaging this target, and this is clearly my best take on it yet! This image is the result of 12.9 hours of narrowband and broadband integration - all shot on my Astro-Physics 130mm EDT and a ZWO ASI2600MM-Pro camera, I shot this as a bi-color HOO image an dused RGB data stars in it. Extensive use of starless processing was used to get this result. See more details in the posting.

Read More
NGC 6979: Pickering’s Triangle ~ 12 hours in SHO
Patrick A. Cosgrove Patrick A. Cosgrove

NGC 6979: Pickering’s Triangle ~ 12 hours in SHO

Pickering’s Triangle is a smaller and fainter section of the Cygnus Loop. While most portions of this supernova remnant have NGC catalog designations, Pickering's Triangle does not. It was discovered after the New General Catalog was published and thus missed out! Often NGC 6979 is used for this object but that is not technically correct. This image is the result of ~12 hours of narrowband exposure taken with my William Optics 132mm FLT APO Platform and rendered using the Hubble SHO palette.

Read More
SH2-114 -The Flying Dragon Nebula - a VERY Faint Challenge Target - 17.5 hours HSSrgb
Patrick A. Cosgrove Patrick A. Cosgrove

SH2-114 -The Flying Dragon Nebula - a VERY Faint Challenge Target - 17.5 hours HSSrgb

SH2-114 - The Flying Dragon Nebula - is an extremely faint emission nebula found in Cygnus. This has proven to be a challenging target. Primarily shot as a Bi-Color Narrowband Ha/S2 image, I found it was very hard to see the nebula in a single 5-minute sub! I ended up going back to capture more data over 8 nights in total spanning two moonless cycles. I also collects RBG data so that I could replace the stars with natural color RGB stars. two moonless cycles of the moon to capture data over 8 nights. I ended up with a total of 17.5 hours - my longest integration to date! And still it was a challenge to process this image!

Read More
Messier 8, 20, and 21: A Rich Region in Sagittarius - 3.9 hours in HaRGB
Patrick A. Cosgrove Patrick A. Cosgrove

Messier 8, 20, and 21: A Rich Region in Sagittarius - 3.9 hours in HaRGB

This imaging project is a group photo taken in a rich portion of the constellation Sagittarius. It is the result of just 4 hours of LHaRGB integration. In this group, you can see Messier 8 (The Lagoon Nebula), Messier 20 (The Trifid Nebula), and Messier 21 ( Webb’s Cross). Also seen is the “Fist” shaped nebula on the upper left that is most strongly associated with IC 4685. This was taken with my Askar FRA400 widefield scope platform.

Read More
NGC6995/IC1340 - The Bat Nebula! - 13.9 hours in SHO
Patrick A. Cosgrove Patrick A. Cosgrove

NGC6995/IC1340 - The Bat Nebula! - 13.9 hours in SHO

The Bat Nebula is actually a small portion of the Eastern Veil Nebula, designated as either NGC6995 or IC 1340. This is a close-up of a fragment of a supernova remnant located 2400 light-years away in the constellation of Cygnus. This is a 13.9-hour integration in narrowband using my William Optics 132mm FLT APO scope and the ZWO ASI1600MM-Pro camera. The deep integration produced some wonderful data of a region of the sky that is both subtle and complex at the same time. Look at it in full resolution to experience this amazing part of the sky!

Read More
Messier 57 - The Ring Nebula - 14.7 hours in LHaRGB - Capturing the Outer Ring!
Patrick A. Cosgrove Patrick A. Cosgrove

Messier 57 - The Ring Nebula - 14.7 hours in LHaRGB - Capturing the Outer Ring!

Messier 57, the Ring Nebula has long been a visual favorite of mine. It is also a target that I have shot two times before with poor results due to its small size. This time I wanted to try to do the best job I could, given the limitations of my current gear. I also wanted to get a really long integration. Finally, I wanted to add Ha data in an attempt to capture the red outer gas rings that are not seen visually and often not seen in the typical amateur images. While I ran into problems on the way, did pretty well in meeting my goals. See the full post for the entire story!

Read More
SH2-73 - An Integrated Flux Nebula in Hercules -   9.8 hours in LRGB
Patrick A. Cosgrove Patrick A. Cosgrove

SH2-73 - An Integrated Flux Nebula in Hercules - 9.8 hours in LRGB

SH2-73 was originally cataloged as an emission nebula. This was a mistake - it is actually a reflection nebula, illuminated by the light of the entire Milky Way Galaxy! This makes it an Integrated Flux Nebula, or IFN.

have tried and failed to capture IFN in the past so here is another effort. Just shy of 10 hours of integration - long for me with my tree situation, but still way too short for IFN. I have finally gotten an image of an IFN - even if it is not a very good one!

Read More
IC 4592 - The Blue Horsehead Nebula - 4.5 hours in LRGB
Patrick A. Cosgrove Patrick A. Cosgrove

IC 4592 - The Blue Horsehead Nebula - 4.5 hours in LRGB

IC 4592, The Blue Horsehead Nebula is a faint reflection nebula located 400 light-years away in the constellation of Scorpius. This target is very large, measuring 1.5 x 3 degrees across was difficult to fit into the frame of my Askar FRA400 Astrograph! This beautiful and seldom imaged target was a challenge for me as it was located very low in the southern sky in an area with the smallest gap between my tree lines. About one hour of data was collected each night over four nights to produce this image.

Read More
Messier 13 - The Great Hercule Cluster  - 8.5 hours in LRGB - Super Sharp!
Patrick A. Cosgrove Patrick A. Cosgrove

Messier 13 - The Great Hercule Cluster - 8.5 hours in LRGB - Super Sharp!

Messier 13 - the Great Hercules Cluster - is one of the finest examples of a Globular Cluster that can be found in our skies. It consists of a giant ball of 100,000-500,00 stars packed into an area 145 light-years across. M13 can be found between 22,000 and 25,000 light-years away in the constellation of Hercules.

This is a 5.6 8.5 hour integration in LRGB using my Astro-Physics 130mm scope the ZWO ASI2600MM-Pro camera. This is the fourth time I have shot this target and this one is clearly my best - displaying a remarkable sharpness in detail.

Read More
Messier 106 Region - 5.7 hours LRGB
Patrick A. Cosgrove Patrick A. Cosgrove

Messier 106 Region - 5.7 hours LRGB

Messier 106 is a galaxy in Canes Venatici, located 20-25 million light-years away.

Galaxy Season is challenging time to find targets when you are dealing with a widefield telescope. I finally decided to image the region around M106 as it contains a host smaller galaxies.

This is a 5.6 hour integration in LRGB using my Askar FRA400 Astrograph and the ZWO ASI1600MM-Pro camera.

Read More
Messier 64 - The Black Eye Galaxy - 2.6 hrs in LRGB
Patrick A. Cosgrove Patrick A. Cosgrove

Messier 64 - The Black Eye Galaxy - 2.6 hrs in LRGB

Messier 64 - The Black Eye Galaxy is the result of 2.6 hours of LRGB data taken with my William Optics 132 mm platform and the ASI1600MM-Pro mono camera. This famous galaxy is located 17 million light-years away in the constellation of Coma Berenices. This is my second attempt with this target - the first being taken two years ago. I am pretty happy with the new results!

Read More
NGC 5907/5906 - The Splinter Galaxy - 8 hrs in LRGB
Patrick A. Cosgrove Patrick A. Cosgrove

NGC 5907/5906 - The Splinter Galaxy - 8 hrs in LRGB

NGC 5907 -The Splinter Galaxy - is another example of an edge-on Spiral galaxy that displays significant dust lane detail across its middle. Its located 54.5 million Light years away in the constellation of Draco. This was shot with my Astro-Physics 130mm with the ASI2600MM-Pro camera. 8 hours of integration in LRGB. It was a real challenge to pull out the details from this very small galaxy.

Read More
Messier 81/82 Wide Field: 3.5 hours LRGB - A Failed Quest for IFN!
Patrick A. Cosgrove Patrick A. Cosgrove

Messier 81/82 Wide Field: 3.5 hours LRGB - A Failed Quest for IFN!

I decided to try using my widefield Askar FRA400 platform to image the region around M81 & M82 to try and capture IFN (integrated Flux Nebula). This effort failed miserably! The resulting image was not too bad, but I was not able to get the kind of integration needed to capture this elusive feature! While this was a major disappointment, the resulting image shows M81, M82, and a third small galaxy NGC 3077 in a very nice part of the sky.

Read More
NGC 4565 - The Needle Galaxy - 11.5 hours in LRGB
Patrick A. Cosgrove Patrick A. Cosgrove

NGC 4565 - The Needle Galaxy - 11.5 hours in LRGB

NGC 4565, The “Needle Galaxy” is a classic example of an edge-on spiral galaxy. This is one of my favorite galaxies and I was very happy to finally have the chance to shoot this target! This was the result of 11.5 hours of LRGB data integration taken with the Williams Optics 132mm FLT APO scope, the CEM60 mount, and the ASI1600MM-Pro camera.

Read More
M101 - The Pinwheel Galaxy in LHaRGB (11 hours)- a third attempt!
Patrick A. Cosgrove Patrick A. Cosgrove

M101 - The Pinwheel Galaxy in LHaRGB (11 hours)- a third attempt!

My third attempt shooting Messier 101 - the Pinwheel Galaxy. My first was in 2020 using an OSC camera and a two-hour exposure. Not bad for a first attempt. My second was in 2021 using an ASI1600MM-Prop mono camera. 15-hour integration! However many data problems and a very poor final results. This time around I am using my Astro-Physics 130mm with the ASI2600MM-Pro camera. 11 hours of integration in LHaRGB.

Read More