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Phosphor
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Status Updates posted by Phosphor
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"Can I have your muffin?"
Who could say no to that face?
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"Cupcakes aren't for breakfast!"
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*Lurks around*
When you gonna fix that larger telescope in the barn?
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@Tacodidra, she sure is!
I wanted to use this as an avatar, but I can't get the file size small enough. I tried cutting out some frames but it ended up throwing the timing off.
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2018 will come to a close in a couple hours (for me). Wish everypony a happy New Year!
On a side note: I haven't done a blog on here yet. Might do one on my astronomy plans for 2019.
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2nd attempt on the Horsehead and Flame Nebula. Not as good as the one from last night since my optics fogged up towards the end of the exposure.
27°F is a bit chilly. Brrrr!!
Exposure: ISO3200; 23 minutes; f/5.5
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30 minute exposure of the Whirlpool Galaxy (M51).
Photographed thru a Celestron C8, unguided. I spent some time adjusting the counterweights to find that sweet spot. Balance is very important.
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A comparison of clouds in different light. There's very little Rayleigh scattering in Near IR, but it increases dramatically into the visible and ultraviolet regions.
Images: NIR-->Visible-->UV-A
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A couple UV shots of some flowers. It was cloudy today, so I had to use a UV flashlight.
A spotlight operating around 350nm would be perfect for this!
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@Stone Cold Steve Tuna, It took a lot of practice to get here and I still need more practice.
Focusing ultraviolet light is almost an art for a couple reasons: Autofocus doesn't work in UV and there's just not much light to work with thanks to atmospheric absorption and scatter. Even on a bright sunny day, the ISO will be around 3200 and shutter at 1/30s with a very fast lens.
I usually take 3 shots of the same subject and pick the best one. Sometimes I'll have to reshoot if the focus is soft.
I can talk all day about this subject
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A lot of inks become transparent when viewed with a Near IR camera.
Fascinating
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@Sondash Studios, search ebay for a converted DSLR camera and an IR pass filter for your lens. It'll get ya started.
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A pair of safety glasses in visible and ultraviolet light.
This is pretty much what I expected since polycarbonate absorbs UV. Still cool to see it, tho.
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A redo on the Pleiades.
Some thin clouds cut my imaging session short, but at least I didn't forget the field flattener this time!
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A taste of Spring!
Pics: Near IR, Visible, and UV
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I'd give her a whole basket of them! 
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