DeepSkyHosting

M101

Category:Deep Sky
Published:
2549
M101
Resolution:
1973x1144 px
File size:
881 KB

Technical information

Telescope/Lens
Sky-Watcher BK909
Camera
Sony NEX-5N
Mount
Sky-Watcher EQ2
Accessories
Homemade Drive
Software
DeepSkyStacker, Fitswork
Location
Москва, Россия

Light pollution

Orange, Bortle 6 zone

Exposure

  • 82 × 25″ · ISO/Gain: 3200

Total exposure: 34 m

Comments

Dmitrii Fomichev
Great! I tried to photograph M101 this weekend, but it didn't work out at all. I don't have a motor drive on my EQ2, though. Can you tell me, at what total exposure time does this galaxy start to become visible?
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BlueTunaReply to Dmitrii Fomichev
Thank you for the feedback! I initially tried 20 seconds and saw a faint, blurry cloud on the camera screen. I decided to increase the exposure to 25 seconds, which made it noticeably better, but I didn't notice that the stars had started to trail a bit.
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Dmitrii FomichevReply to BlueTuna
Clear. I started to see some hints of the object appearing at 15 seconds, but without tracking, it smears too much, so I didn't even try longer exposures. Looking at your photos, I understand that an hour drive is very useful even with our eq2 and 909 tube? I'm considering getting a simple type drive, but some say it's complete junk. Have you had any experience with such a drive?
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Dmitrii Fomichev
Great! I tried to photograph M101 this weekend, but it didn't work out at all. I don't have a motor drive on my EQ2, though. Can you tell me, at what total exposure time does this galaxy start to become visible?
Reply

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More photos by BlueTuna