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palatine

light pollution filters?...

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It is threaded but I don't know what diameter it is but will measure it tomorrow and get back to you. Cheers

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So are you screwing a 2" adapter (2" diameter) like this onto the front of the DSLR? Does it have a thread on the inside at the telescope end?

http://i00.i.aliimg.com/wsphoto/v0/2051884230_2/2-To-T2-M42-0-75-2-inch-DSLR-Prime-Nose-Adapter-For-Telescope-Aluminum-ED.jpg

Do you have a 1.25" version of this nose piece too in case the filter I've got is a 1.25" version?

James

Just looked at this pic and it's not threaded at the end like in your pic. So if it's 2" I'll get that nosepiece

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If you are having trouble achieving focus with the dslr on the newt, the long tube on your pictures, well you could probably get a shorter one of them. I'm not sure what it's called or it's thread, but you would be able to get one.

James

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Your phone needs charging :)

If it is t2 at the camera end, and 2" (threaded internLly) the telescope end, it will do the trick.

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I'm gonna have to go laptop... I can't read it in my phone. Lol

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The telescope end looks good, it's 2" and threaded. Says the back end is "fish tail" - no idea what that means. You want it to have a t2 thread and ideally a flange so it stops screwing in. You don't want to acrew in too far.

James

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The telescope end looks good, it's 2" and threaded. Says the back end is "fish tail" - no idea what that means. You want it to have a t2 thread and ideally a flange so it stops screwing in. You don't want to acrew in too far.

James

yeah.. I think i'll wait on that till I can check what "fishtail" means

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This is the filter i've got and which you are free to try:

post-25543-0-50470200-1432453599_thumb.j

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Ohh!!! Shiny. Lol. Very kind of you. Shall I pm you my address? I'll PayPal you some postage.

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Shiny? Yeah send me your address; don't worry about postage it will be £1 or so lol. Can't promise it will get posted today.

James

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I live in light polluted area Darlington, I bought the astronomik CLS light pollution filter for 1.25inch eye piece for £70, I found it certainly made objects appear different, m42 had a marked green appearance and in general its gives most starts a green tinge , jupiter gas bands appeared darker and greener but for jupiter was able to see more without it attached to be honest

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I found the Astronomik CLS filter made a big difference even on my old 550D, though I did have colour balance problems with the image going blue-green due to the IR cut of the camera. With a CCD it's even more effective.

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Would there be a way of setting the white balance up to compensate?

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If you are shooting raw, as you should for stacking, all the white balance is done after stacking.

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The telescope end looks good, it's 2" and threaded. Says the back end is "fish tail" - no idea what that means. You want it to have a t2 thread and ideally a flange so it stops screwing in. You don't want to acrew in too far.

James

I think fish tail just means it is spread out in diameter. I.e. It is cone shaped. This stops it falling out when screws are slackened to remove. Lots of eye prices are made with this.

I could be wrong though.

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Would there be a way of setting the white balance up to compensate?

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Setting white balance in camera.

Shot a grey card or white sheet of paper on a bright sunny day.

Fill the frame, use AV mode and the ISO you intend to use at night.

In the menu under white balance, chose custom white balance and use the image you shot of the grey card.

Edited by wxsatuser
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