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NickSpiker In reply to Xyclopx [2014-09-23 01:50:12 +0000 UTC]

Thank you!

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NickSpiker In reply to trinity343 [2014-09-21 16:26:15 +0000 UTC]

It was done 3 hours after sunset, so the only light source was the night sky, not the moon or the sun.
IR filter, >650nm

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trinity343 In reply to NickSpiker [2014-09-21 16:56:58 +0000 UTC]

ah  cool thanks for replying. 

might have to get myself an IR filter then. i just got an ND filter set (ND2/4/8) i've seen some good night sky photos with those as well. 

a lot of my issues come form being pretty close to a major city so if i can use a filter to reduce the light pollution where i am, i may be able to start getting some nice shots of the night sky

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NickSpiker In reply to trinity343 [2014-09-21 17:33:51 +0000 UTC]

From my experience, there is less dispersion in IR, and less light pollution in IR, so the night sky is a bit more clear in IR, especially near city lights.
The other thing you get in IR is airglow.  From about 900nm and up, it gets pretty bright.
If you watch this video
youtu.be/T-IX2gVPQS0
Toward the end, you can see the wavy blue airglow in the sky.

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trinity343 In reply to NickSpiker [2014-09-21 18:43:56 +0000 UTC]

fascinating. so to keep down on the airglow, would you suggest sticking closer to the 650nm filters?

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NickSpiker In reply to trinity343 [2014-09-21 19:38:51 +0000 UTC]

It doesn't matter, the 650 longpass will still let 900nm through. You need something that blocks above 850nm.
www.hoyaoptics.com/color_filte…

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trinity343 In reply to NickSpiker [2014-09-21 19:59:53 +0000 UTC]

ah gotcha.  i'll definitely have to look into them then.  thanks for the tips and teachings

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NickSpiker In reply to trinity343 [2014-09-22 01:58:18 +0000 UTC]

For sure, the hot mirrors are a bit spendy, and you will have a pretty significant light loss, but other than that, it'll do what you want.

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NickSpiker In reply to Alexander520 [2014-09-16 03:51:14 +0000 UTC]

Just 30 seconds at ISO 400 at f/1.1
Panoramic stitching head, 54 photo stitch

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NickSpiker In reply to dragonwings90 [2014-09-16 03:52:07 +0000 UTC]

Bowman Lake, Glacier National Park, Montana, USA

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dragonwings90 In reply to NickSpiker [2014-09-16 23:53:40 +0000 UTC]

;~;
so...
far...
away...

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