Swan Nebula Mosaic in Ha *toned down burnt core*

[strongmanmike (Michael)]

That's quite a dramatic field Marc...I think I like square fields really....

Mike

[jase (Jason)]

Copious amounts of nebulosity. Impressive Marc. Well done.

[multiweb (Marc)]

Originally Posted by avandonk

Your problem is temperature gradients. The heating you are applying is most probably leading to the temperature gradients. Thermostats are the only way.

Thanks Bert - I'll look into getting a thermostat.

Originally Posted by strongmanmike

That's quite a dramatic field Marc...I think I like square fields really....

Thanks Mike. I wonder why... See you at the SPSP?

Originally Posted by jase

Copious amounts of nebulosity. Impressive Marc. Well done.

Thanks for the comments Jase.

[multiweb (Marc)]

Toned down the core on the Swan itself after a few comments. Probably got a bit too excited pushing the surrounding and burn the main object. Looks a bit more balanced now with more details. Updated download links.

[LGT150 (lucien)]

je ne la connaissais pas sous cet angle elle est très détaillée

[multiweb (Marc)]

Originally Posted by LGT150

je ne la connaissais pas sous cet angle elle est très détaillée

Merci Lucien. Oui, il y a beaucoup the nuages tres dense dans le champ de vue mais ils sont aussi tres sombre et pas facile a capturer.

[Hagar (Doug)]

Nice image Marc, The core is quite visible with the barring showing up very well. Detail overall is very nice. Reading the other posts I have a question about the hyperstar as well. Do you find the air movement caused by the fan shifting a lot of air inside the dew shield causes any distortion to the image? Always wondered about shifting so much air in a small contained area.

[multiweb (Marc)]

Originally Posted by Hagar

Nice image Marc, The core is quite visible with the barring showing up very well. Detail overall is very nice. Reading the other posts I have a question about the hyperstar as well. Do you find the air movement caused by the fan shifting a lot of air inside the dew shield causes any distortion to the image? Always wondered about shifting so much air in a small contained area.

Thanks Doug. TBH I don't think the air flow caused by the camera causes any distorsion in the image. It does actually help in keeping the dew off the corrector as well so I think it's a plus. Also at an image scale of almost 3asp you would need some serious distortion to show in your images. We're almost talking about widefield like image scale.

I've enclosed everything inside a semi-rigid dew shield and run the wiring through holes inside the dewshield because I'm extremely paranoid about knocking the hyperstar off the corrector plate and break everything. I'm always on the move and I have slightly bumped the dewshield many times when moving the scope around. You can't be too careful. One knock and that would be the end of the gig.

Also I have enough slack on the camera connection inside the dewshield so in the event a wire gets caught or someone step on a cable it won't pull on the hyperstar. It'll pull on the dewshield and the whole scope will move which is safer too.