The reflection nebula "Iris" (NGC 7023) and the dark dust clouds enveloping it in the constellation Cepheus.
- Resolution:
- 5000x3339 px
- File size:
- 80817 KB
Technical information
- Telescope/Lens
- Sky-Watcher Quattro 150P
- Camera
- Nikon D3300a
- Mount
- HEQ5 Pro Belt
- Guide Scope
- Datison 60/250
- Guide Camera
- ZWO ASI 120MM mini
- Accessories
- 2" МPCC Mark IIIZWO AsiAir-miniZWO EAF
- Software
- Electra Stacking, Siril, GraXpert, Photoshop 2020
- Location
- Сочи, Харциз Второй, Россия
Light pollution
Yellow, Bortle 5 zone
- Date taken
Exposure
- 148 × 300″ · ISO/Gain: 800 · SvBony SLC 2"
Total exposure: 12 h 20 m
Comments
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The thing is, I don’t know the sensor temperature at which the lights were taken. My Nikon DSLR doesn’t have a sensor temperature meter on the matrix. And I shoot darks at an approximate temperature by simply putting the camera in the fridge) But the temperature of the darks is very important! Differences should be no more than +/- a couple of degrees, and ideally even more precise.
As for a cooled astro camera, I can only dream of one.
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