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Orion Nebula
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PostPosted: Thu Feb 04, 2021 3:35 pm    Post subject: Orion Nebula Reply with quote

Nikon D850, 500mm f/8 Reflex Nikkor (it is basically a small SCT telescope!). 220 3/4 sec light frames and 30 each dark, bias and flat frames, stacked in Deep Sky Stacker



PostPosted: Fri Feb 05, 2021 12:43 pm    Post subject: Reply with quote

Like 1 Like 1


PostPosted: Sun Feb 21, 2021 2:30 pm    Post subject: Reply with quote

I like it!
Excellent!


PostPosted: Sun Feb 21, 2021 5:40 pm    Post subject: Reply with quote

That came out really nice.

What are your settings for the image and did you use a star tracker? I'm starting with deep sky Astro just now and haven't been able to get anything exciting yet.

I could either use my Nikon D750 with Tamron 500mm f8 or my Olympus E-5 with 50-200 + 1.4TC.

I'm debating with myself if I need a tracker...


PostPosted: Sun Feb 21, 2021 6:04 pm    Post subject: Reply with quote

Karhallarn wrote:
That came out really nice.

What are your settings for the image and did you use a star tracker? I'm starting with deep sky Astro just now and haven't been able to get anything exciting yet.

I could either use my Nikon D750 with Tamron 500mm f8 or my Olympus E-5 with 50-200 + 1.4TC.

I'm debating with myself if I need a tracker...


https://nightskypix.com/polar-alignment/

https://petapixel.com/2017/04/07/npf-rule-formula-sharp-star-photos-every-time/


PostPosted: Mon Feb 22, 2021 4:55 am    Post subject: Reply with quote

Wow, that came out pretty nice, especially for just a 500mm. I need to start trying this, but my biggest problem is I'd have to drive for probably a hundred miles before I'd find dark skies.

Stacking technology obviates the need for a tracker because each individual frame is a relatively short exposure. Probably the biggest problem when not using a tracker is having to occasionally re-position the lens because of image drift caused by the Earth's rotation. However, if you have a telescope with a mount that has the manual adjustment wheels/knobs for tracking, you can mount your camera/lens to the telescope and use the wheels to keep the object centered more easily.