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| Comet C/2017K2 PANSTARRS |
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| IC4756 |
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| NGC 6823 |
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| IC4665 |
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| IC4725 |
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| M11 (Wild Duck Cluster) |
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| M26 (NGC6694) |
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| NGC6709 |
Wednesday, July 27, 2022
7-26-2022 : A Comet and Star Clusters
Thursday, July 21, 2022
July 20, 2022 Summer Favorites
All images were acquired with Celestron 8 SCT on AVX mount with ZWO ASI294MC Pro using Starizona Night Owl operating at F/4 and light pollution filter. Subs for the comet, Sh2-142 and Sh2-155 were 30s typical for the Harvard, MA area. I'll revisit the Sharpless targets with 60s exposures in the future to try to bring out more nebulosity. Exposures respectively for M27(my better half's favorite) and M13 were 8s and 15s. Update: M13 reprocessed for better contrast.
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| M13 |
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| Comet C2017K2 PANSTARRS |
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| Sharpless 155 |
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| Sharpless 142 |
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| M27 |
Wednesday, July 13, 2022
Globular Clusters
This is the time of the year to image globular clusters, some of my favorite targets. The bulk of them tend to be low in the southern sky which is a challenge considering seeing and refraction. M13 was included in the previous post. Several others acquired on the same night appear below. M55 was acquired on a later night. Images were averaged from 30x30s subframes acquired at 120 unity gain. Configuration was Celestron 8 , Starizona NightOwl 0.4x focal reducer, ZWO ASI294MC Pro CMOS camera. Update: Images reprocessed with GraXpert stretching and residual gradient removal.
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| Messier 3 |
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| Messier 4 |
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| Messier 5 |
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| Messier 10 |
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| Messier 12 |
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| Messier 13 |
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| Messier 55 |
Tuesday, July 12, 2022
Seasonal Favorites
It's that time of the year, mid summer, to revisit old favorites. I never tire trying to better myself imaging these or other targets. All my recent imaging has been done from increasingly light polluted Harvard MA. Poorly targeted and excessive LED lighting is really trying to kill off night. Nonetheless the Milky Way can still be glimpsed overhead from Harvard. Typically 30 to 60 30 second exposures are acquired at F/4 using the Starizona Night Owl focal reducer corrector, light pollution filter and ZWO ASI294MC Pro using 120 unity gain. Subframes are stacked and averaged with Autostakkert! 3. Images histograms stretched and images processed in PaintShop Pro 2021. Additional processing done in using Microsoft Photos bundled with Windows 10.
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| IC5146 - Cocoon Nebula |
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| Messier 8 - Lagoon Nebula |
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| Messier 16 - Eagle Nebula |
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| Messier 17 - Swan or Omega Nebula |
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| Messier 20 - Triffid Nebula |
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| NGC7023 - Iris Nebula |
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| Messier 13 |
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NGC7380 |
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