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!

NGC 7822 - The Central Portion of the Question Mark Nebula (~14 hours in SHOrgb)
Patrick A. Cosgrove Patrick A. Cosgrove

NGC 7822 - The Central Portion of the Question Mark Nebula (~14 hours in SHOrgb)

NGC 7822 is the Clamshell Nebula - located 2900 light years away in the constellation of Cepheus. This is a very large target, and with my smallest scope, I could still only fit the central portion of this complex area into the camera's field of view. This image results from just under 14 hours of integration and consists of a mix of narrowband data for the nebula and broadband RGB data for the stars.

Read More
SH2-119 The Clamshell Nebula (3.5 Hours in SHO) - An Unintended Image
Patrick A. Cosgrove Patrick A. Cosgrove

SH2-119 The Clamshell Nebula (3.5 Hours in SHO) - An Unintended Image

My second image of the year started as a disaster and motivated me to move to NINA. I spent a few nights learning NINA during the bright Moon cycle, knowing the subs would be a waste. Lo and behold, there was an image there!

This is SH2-119—The Clamshell Nebula—3.5 hours in SHO. Read the story of my trials and tribulations that led to this image!

Read More
SH2-82 - The Little Cocoon Nebula - 7.3 Hours in LRGB
Patrick A. Cosgrove Patrick A. Cosgrove

SH2-82 - The Little Cocoon Nebula - 7.3 Hours in LRGB

My first image of the year - and my first image from my new home after the move!

This is SH2-82—The Little Cocoon Nebula—7.3 hours in LRGB. Located ~4,000 light-years away in the constellation Sagitta, this emission/reflection nebula is in a rich region of the sky with a multitude of stars and dark dust lanes.

Read More
WR 134 - A Wolf-Rayet Star Region In Cygnus- 15.5 Hours in SHO
Patrick A. Cosgrove Patrick A. Cosgrove

WR 134 - A Wolf-Rayet Star Region In Cygnus- 15.5 Hours in SHO

This is the third and final Imaging Project resulting from data collected during a recent - and very rare for this year - clear string of nights!

This is WR134 - a Variable Wolf-Rayet Star located 6,000 light-years away in the constellation Cygnus. This is a very interesting and rich area of the sky with a lot of objects in view. This includes WR134, WR135, and WR137 - the very first Wolf-Rayet stars ever found. These stars stood out as they had broad emission lines in their spectra instead of just absorption lines typically seen in stars.. These stares are massive and hot and have short lives.

Read More
SH2-132 - A Reprocess of The Lion Nebula in SHO (8.33 hours)
Patrick A. Cosgrove Patrick A. Cosgrove

SH2-132 - A Reprocess of The Lion Nebula in SHO (8.33 hours)

This is an Image Reprocessing Project for SH2-132, also known as The Lion Nebula - whose data was originally collected in September of 2021.

The Lion Nebula is a rich HII region with star clusters, emission nebulae, and dark dust regions. Located in the southern portion of the constellation Cepheus, the Lion Nebula is roughly 10,00 light-years away in the Perseus Arm of the Milky Way Galaxy. This is a very faint and challenging target.

This image was taken on the Askar FRA400 Platform with 8.33 hours of exposure in narrowband.

Read More
Messier 101 Supernova SN2023ixf ~3 Hrs in LRGB - Yet Another Supernova Shot - But This One Is Mine!
Patrick A. Cosgrove Patrick A. Cosgrove

Messier 101 Supernova SN2023ixf ~3 Hrs in LRGB - Yet Another Supernova Shot - But This One Is Mine!

With the recent discovery of a bright supernova in the well-known Messier 101 - The Pinwheel Galaxy - a lot of astrophotographers have been going out of their way to grab an image of this galaxy during this event.

As a result, there are many - probably TOO many - images of this going around.

So why take an image myself? Is it because I think I can do better? NOPE! After all, I shot this on a widefield scope not suitable for galaxies, and I ended up shooting through smoke and with too little integration. So why do it?

Well - I wanted my own image of this event- and I wanted an excuse to explore what supernovae really are - after all - here I am looking at one!

So this posting will delve into this topic….

Read More
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
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
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 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 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
IC 2177 - The Seagull Nebula in SHO - with just 2 hours!
Gear Patrick A. Cosgrove Gear Patrick A. Cosgrove

IC 2177 - The Seagull Nebula in SHO - with just 2 hours!

IC 2177, better known as the Seagull Nebula, is a rich HII emission region located 3650 light-years away located new the borders of the constellations Canis Magor and Monoceros.

This image results from slightly over 2 hours of narrowband integration on my 400mm wide field scope. This short integration time results from bad weather and sky access limitations due to trees on my property.

Careful processing was able to produce a reasonable image despite the lack of integration time.

Read More
SH2-157 The Lobster Claw Nebula - with NGC 7635 (The Bubble Nebula) in SHO - 4.25 hours.
Gear Patrick A. Cosgrove Gear Patrick A. Cosgrove

SH2-157 The Lobster Claw Nebula - with NGC 7635 (The Bubble Nebula) in SHO - 4.25 hours.

SH@-157, The Lobster Claw Nebula, is located 11,000 light-years away in the constellation of Cassiopeia. A faint object, this was captured on the night of November 8th when I hoped to have two more nights of clear weather. That did not happen and this image was created with only 4.25 hours of data. I hope to revisit this object, collect more hours and do it justice. This was shot on my wide-field FRA400 rig and is rendered in the Hubble SHO palette.

Read More
Messier 31 - The Andromeda Galaxy in LHaRGB - 6 hours
Gear Patrick A. Cosgrove Gear Patrick A. Cosgrove

Messier 31 - The Andromeda Galaxy in LHaRGB - 6 hours

This is my third attempt at M31. This time with a widefield system that can fit the entire galaxy into the field of view., and a mono camera that allowed me to collect Ha as well as LRGB data. A total of 6 hours of data integration.

Messier 31 is also known as NGC 224 and the Andromeda Galaxy, or as the Andromeda Nebula before we knew what galaxies were. It can be seen by the naked eye in the constellation Andromeda (how appropriate!) and is our closest galactic neighbor located 2.5 Million light-years away. It is estimated that it contains about one trillion stars - twice that of our own Milky Way.

Read More
IC 1805 - The Heart Nebula in SHO - 11.5 Hours
Patrick A. Cosgrove Patrick A. Cosgrove

IC 1805 - The Heart Nebula in SHO - 11.5 Hours

IC 1805 is also known as SH2-190 and more commonly as the Heart Nebula. It is located 7500 light-years away in the constellation of Cassiopeia. First discovered by William Herschel in 1787, the Heart Nebula is a region of glowing gas and dark dust lane.

This is a result of a 11.5 hour exposure on my widefield shot taken on my portable FRA400 camera platform - processed using the Hubble SHO palette.

Read More
IC 1396/1396A - The Elephant's Trunk Nebula
Patrick A. Cosgrove Patrick A. Cosgrove

IC 1396/1396A - The Elephant's Trunk Nebula

IC 1396, also known as The Elephant Trunk Nebula is rich region emission nebulae and dark dust regions. Located in the constellation Cepheus, the Lion Nebula is roughly 2400 light-years away.

This image was taken on the Askar FRA400 Platform with only 3 hours of exposure in narrowband - and was the first image where the FRA was used for portable operations on a trip to North Carolina.

Read More
SH2-132 The Lion Nebula in SHO (8.33 hours)
Patrick A. Cosgrove Patrick A. Cosgrove

SH2-132 The Lion Nebula in SHO (8.33 hours)

SH2-132, also known as The Lion Nebula, is a rich HII region with star clusters, emission nebulae, and dark dust regions. Located in the southern portion of the constellation Cepheus, the Lion Nebula is roughly 10,00 light-years away in the Perseus Arm of the MilkyWay Galaxy. This is a very faint and challenging target.

This image was taken on the Askar FRA400 Platform with 8.33 hours of exposure in narrowband,

Read More
NGC 7000 (The North American Nebula) with IC5070 (Pelican Nebula) in Narrowband- Total of 9.33 Hours
Patrick A. Cosgrove Patrick A. Cosgrove

NGC 7000 (The North American Nebula) with IC5070 (Pelican Nebula) in Narrowband- Total of 9.33 Hours

NGC 7000, also known as the North American Nebula and Caldwell 20, is a large H II emission nebula located in the constellation of Cygnus (The Swan). It measures roughly 2 degrees by 1.5 degrees in size, making the nebula about 10X larger than the area covered by the full moon.

Also included in this view is the Pelican Nebula IC 5070

This image is the result of 9.33 hours of integration in Narrowband and rendered in the Hubble Palette.

Extensive notes on image processing are included for the first time.

Read More