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M 101

lxkor
891508
Category:Deep Sky
Published:
1036
M 101NGC 5447NGC 5449NGC 5450NGC 5453NGC 5458NGC 5422NGC 5451NGC 5455NGC 5457NGC 5461NGC 5462NGC 5471NGC 5473NGC 5474NGC 5477NGC 5484NGC 5485
Resolution:
4748x4748 px
File size:
8742 KB

Photo description / processing

An incredible number of satellites pass in the vicinity of M101. Often, 4-5 trails were recorded during the exposure. Thanks, Elon! (no).

Technical information

Telescope/Lens
SharpStar 61EDPH II
Camera
ZWO ASI533MM Pro
Mount
Umi 17 Lite
Guide Scope
OAG
Guide Camera
ZWO ASI120MM
Accessories
Mele mini PC, ZWO EFW, ZWO EAF
Software
N.I.N.A., Siril, SETI Astro Suite, Adobe Photoshop
Location
Липецк, Россия

Light pollution

Yellow, Bortle 5 zone

Date taken

Exposure

  • 73 × 120″ · ISO/Gain: 100 · L ·
  • 80 × 120″ · ISO/Gain: 100 · R ·
  • 81 × 120″ · ISO/Gain: 100 · G ·
  • 84 × 120″ · ISO/Gain: 100 · B ·

Total exposure: 10 h 36 m

Comments

Ryjov Aleksey
It can be even larger, but I don't remove such single stars; the processing isn't affected.
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lxkorReply to Ryjov Aleksey
I removed about 10 frames with the most prominent trails. When I was shooting M81, there were far fewer trails, but here almost every other exposure had at least 1-2 trails. And this was just a 2-minute exposure—with a longer one, you could easily draw a Star of David.
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Ryjov AlekseyReply to lxkor
Just unlucky, I guess. Hit right at the peak hour.
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