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Ron Clarke

CCD image?

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Ron Clarke

Took this image with the Starlite OSC last night for the first time using the SW 150PDS.

I aimed at the North America nebula and took a few 300 sec images. No filters were used.

On stacking and using CS3 I could not idenitfy the stars?

On solving in Astrometry it turns out they are in the centre of the nebula ( HD199870 etc) but

there is no hint of the nebulosity???

Comments please?

 

large.CCDtest220719Finishsmall.jpg.214ea04254848538c7ddb9dbe702f216.jpg

Edited by Ron Clarke
added text

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Graham

I would hazard a guess that it is due to the close up nature of the image Ron.

The Neb is all the red stuff you can see in the background.

For the wispy Neb to really show up you are going to need an HA filter or a focal reducer.

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Ron Clarke

No room for a Focal reducer and I will have to save for an Ha filter (2"!) so I must be more selective with the targets or use the DSLR!!?

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Graham

You should be able to use a 1.25 filter with that camera Ron if you connect the camera direct to the filter wheel. 

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Graham

If not screw your filter into the nose piece. 

I am assuming you have a 1.25 nose piece on the camera 

Edited by Graham

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Ron Clarke

I don't use that Graham, train is; focuser, coma corrector, adjustable spacer (which needs altering I think!) and CCD.

I'll have a think and a 'tinker' and see what I can do! 

 

Ron

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Ron Clarke

Found a 1.25" 0.5 reducer, fitted it on the slim nose of the cam but can't see anyway to fit the Coma corrector.

Will try a few things out tonight if it stays clear!!

Ron

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