Notes from a Small Observatory
The trials, tribulations and small triumphs of a Charlotte, NC astronomer imaging under Bortle 8/9 skies.
Tuesday, October 21, 2025
Comet Lemmon
Comet Lemmon. 10 min x 10 second exposures. S50. Color is a little strange, but at least it’s there :)
The Double Cluster in Perseus
The Double Cluster in Perseus. This is a 4.5 hour capture with one minute subs. Stacked on the D3 and processed in Stellar Studio. This is an object where the wide field of the D3 really excels. It also did a great job of capturing the colors of the stars.
Sunday, October 19, 2025
The Ghost of Cassiopeia Seestar S50
This image of the Ghost of Cassiopeia has 12 hours of total integration time with the astro filter, including 1.5 hours of narrowband data. The inidividual exposures were 20 seconds each. I live in Bortle 8/9 skies, so the non-narrowband image had horrible light gradients which took a lot of processing in Graxpert and Affinity 2 to remove. I stacked, stretched and star processed in Siril, and did other work in Cosmic Clarity, Seti Astro and Affinity.
The Ghost of Cassiopeia is region containing both emission and reflection nebllas. It is energized by the giant star Gamma Cassiopeia, which can be seen at the edge of the image. The star is 55,000 brighter than our sun and 19 times its mass.
19.5 Hours on M31 with the Dwarf 3
This is a 19.5 hour integration of M31 with the Dwarf 3 with 60s subs. I stacked, stretched and star processed in Siril. I used Cosmic Clarity for sharpening and denoising, and Graxpert to fix gradients. Final tweaking was done in Affinity 3 and Photoshop.
Saturday, October 18, 2025
28.5 hours on WR134 with the Seestar S50
Here's WR134 again--this time with 28.5 hours of integration time. It was processed in Siril, Seti Astro and Affinity 2 using set of astro macros. I definitely overdid it on Cosmic Clarity!
Tuesday, September 30, 2025
The Bubble Nebula--16h with the Seestar S50
This is a cropped image of a 16 hour integration (EQ mode, 20s exposures). It was processed in Siril, Graxpert, Cosmic Clarity, and Affinty. The Seestar pulled out some nice detail for such a small aperture. I may try with even more data, if the skies ever clear here in NC 🙂
Sunday, September 21, 2025
WR 134--8 Hours with the Seestar 50
I need a lot more data to get a good image of this object: WR134. WR 134 is a Wolf-Rayet star with a typically very high surface temperature and strong stellar winds. The whole ring-shaped shock nebula is not visible in this image, but part of it is (the blue, curved structure). I haven't seen an image of this object with an S50, so I thought I would try to see if I could capture it. This image has 1510 x 20s exposures in EQ mode. It was processed in SIril, Graxpert, and Photoshop.
Here's V2, with slightly more aggressive processing :)
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Comet Lemmon
Comet Lemmon. 10 min x 10 second exposures. S50. Color is a little strange, but at least it’s there :)

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