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Another Bubble.. and friends, between the clouds


nunomac
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Last week I went to my observatory and took the GSO 200/800 first light.

I caught some high clouds but between them I manage to get 70min of lights.

I forgot to lower the ISO from 1600 to 800, hence the noise.

Anyway I am pleased with the result.

NGC7635 / M52 - 14x300s

GSO 200/800, LXD75, Canon 350d (MOD), Baader MPCC, Astronomik CLS Clip + IR Cut. Guided with Meade DSI and 50mm finder.

Only darks.

I am getting a darker band on the lower part of the image, does anyone know what can be causing this?

I can't remove it with flats.

I will have to catch this one again, next time with a lower ISO and more lights.

bubble04.jpg

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Hello Nuno,

Even with high ISO, it's a great image, lots of stuff showing :)

As you know I use the same setup, and I also get that weird dark band sometimes, as you say it's very hard to process that out, sometimes flats don't solve the issue...still I dont know the cause for this :(

Surelly something is "shadowing" the light cone...but what??

Greets,

Luís

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That's a lovely bubble and nicely processed.

I thought I was the only one getting bands, I Have a 200, Quattro cf and this shows up as a light band not dark.

Exactly in the same place very odd, the only thing I thought it might be is some kind of internal reflection from the cls clip filter. I use one as well, very odd indeed.

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That's a lovely bubble and nicely processed.

I thought I was the only one getting bands, I Have a 200, Quattro cf and this shows up as a light band not dark.

Exactly in the same place very odd, the only thing I thought it might be is some kind of internal reflection from the cls clip filter. I use one as well, very odd indeed.

Thanks for the comment :smiley: Your bubble is very nice too!

Hummm you're right, and if we see more carefully, in my image, there's the light band and below

there's a dark one making this part of the image inconsistent with the rest.

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