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Learned an important lesson today...

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#1 TXDigiSLR

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Posted 07 July 2020 - 04:53 PM

Since it's been cloudy around here lately, and I just got my new Mini PC all set up, and I bought a cheap light panel to use for my flats, I decided to expand my flat library...

 

I plugged in the panel, set NINA flat wizard to take 25 of each of my filters (7 of them) and then clicked the start button....

 

When I came back and looked at all my flats, they had ugly dust bunnies!  Oh no, where did these come from?  I checked photos from all seven filters, and the dust bunnies where present in all the photos at the same location, so I know it's not my filters...   So, I go out and clean my scope lens.  (Used a rocket blower and then GENTLY an optics quality microfiber cloth)  Now I go back to NINA and set the flat wizard up again, although this time I'm only going to take three or photos...

 

Darn it!  Dust Bunnies Again!  but wait, they seem to have moved...  well, the bunnies are all in the same location to one another but in a different orientation to the photo...    What the heck!

 

So, I go look at my light panel... sure enough, there are a few very tiny spots I can only see if I crank the light all the way up!  So, I gently clean the light panel, and try again...

 

Brilliant!  no bunnies...  but now its 105 degrees in my backyard shed and the cooler can't keep my temp down to -10

 

Oh well, I'll shoot a set of 0 degree flats now for use in the hot Texas summer...

 

 


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#2 Alex McConahay

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Posted 07 July 2020 - 05:09 PM

So, the lesson you learned is to air condition the shed?

 

Alex


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#3 TXDigiSLR

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Posted 07 July 2020 - 05:15 PM

So, the lesson you learned is to air condition the shed?

 

Alex

That would be expensive, but maybe something I'll look into!



#4 Alex McConahay

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Posted 07 July 2020 - 05:32 PM

While I would never advise shooting flats (or anything) at a very high temperature, the temperature of flats is not quite as critical as darks--which should be matched to the light temperature as closely as possible. 

 

They certainly do not need to be at -10 if you cannot get them there. 

 

But, who wants to be out in the shed doing it at that temperature.

I know I schedule my work such that I am not out in the heat of the day.

 

 

Alex



#5 klaussius

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Posted 07 July 2020 - 05:41 PM

I was bit by the same bullet once. The flat panel is usually the least obvious culprit, but it does matter if it ain't clean.


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#6 ChrisWhite

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Posted 07 July 2020 - 06:34 PM

Why I love voyager and the automated skyflats routine!



#7 OldManSky

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Posted 07 July 2020 - 08:39 PM

Why I love voyager and the automated skyflats routine!

Voyager will clean your flat panel for you???  :)


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#8 ChrisWhite

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Posted 07 July 2020 - 08:41 PM

Voyager will clean your flat panel for you???  smile.gif

funnypost.gif


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