M101 Pinwheel

Igor Glazunov

109563

Deep Sky

Mar 26th, 2020

1966

Resolution:: 1920x1280 px
File size:: 689 KB

Photo description / processing

test

Technical information

Telescope/Lens: Sky-Watcher BKP2001
Camera: фуджи Х-Т20
Mount: МТ-3S
Accessories: -
Software: FastStone Image Viewer

Location: Алтай,с Харлово, Россия

Light pollution

Black, Bortle 1 zone

Exposure

1 × 30″ · ISO/Gain: 25600

Total exposure: 1 m

Comments

ImSare

Remove the noise

Mar 26th, 2020

Igor Glazunov

Noise removed, you're right—it's a test shot. I focused using the camera's monitor, and I'm not very good with Photoshop either. I still have nostalgia for the film era, so I shoot single frames. The critique is instructive, I'll take it into account.

Mar 27th, 2020

ImSareReply to Igor Glazunov

To remove noise, you don't need any special knowledge. Just give it a try and post your results right here, especially for color noise.

Mar 28th, 2020

Igor Glazunov

Without knowledge of astrophotography techniques, the result is a dead end—colorful noise. This outcome comes from long exposure times, simulating "Velvia" film/bright and high ISO 25600. The solution: a cooled sensor + guided mount + fast lenses + post-processing + a proper astrophotography location!

Mar 29th, 2020