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The Cygnus Loop NGC 6960, NGC 6995, and others

Category:Deep Sky
Published:
1976
The Cygnus Loop NGC 6960, NGC 6995, and others
Resolution:
5456x3840 px
File size:
6179 KB

Photo description / processing

First light of the new Askar 65 PHQ telescope with a 0.75x reducer. Captured in a single night, with the Moon nearly full.

Technical information

Telescope/Lens
Askar 65 PHQ
Camera
ToupTek IMX571
Mount
Sky-Watcher EQ6 Pro
Guide Scope
50mm Finder Scope
Guide Camera
T7M
Accessories
Askar 0.75x Reducer for 65PHQ Telescope
Software
N.I.N.A., Pixinsight, Adobe Photoshop
Location
Екатеринбург, район озера Глухое., Россия

Light pollution

Orange, Bortle 6 zone

Date taken

Exposure

  • 48 × 300″ · ISO/Gain: 152 · OPTOLONG L-eXtreme ·

Total exposure: 4 h 0 m

Photo versions

Cygnus Loop  NGC6960 NGC6992
Updated
Cygnus Loop NGC6960 NGC6992

Jul 18th, 2024

1 h 54 m

As they say, a small RASA. Samyang 135mm lens with a ZWO ASI676MC camera, 3x3 degree field, pixel scale 3 arcseconds per pixel. I made an aperture stop in front of the lens and glued an M48 ring into it to screw in a filter. I shot for one night and couldn’t figure out why there were strange reflections in the image and the stars looked triangular. I tried adjusting everything, but nothing helped. Then I gave up and placed the filter between the lens and the camera—everything fell into place. But I kept the aperture stop in front of the lens. I shot for one night, totaling almost 2 hours. I really liked the level of detail, though of course more integration time would help. A year ago, I photographed the same target with an Askar 65 PHQ telescope using an Askar 0.75x reducer for 65 PHQ telescopes and a ToupTek IMX571 camera. Of course, there’s a nuance—I shot in September when the nights are dark, while this time it was still twilight. But the difference in resolution isn’t that big. See for yourself.

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More photos by Oleg Novoselov