RBA Premium Astrophotography

Seagull nebula (IC 2177)

Posted: December 30th, 2008

Bigger size: 1981x1257

December 26th and 30th, 2008

Exposure time: Ha: 17x15' @ 2x2 (Total: 4.25 hours)
Focal: 530mm, f/5

Imaging scope: Takahashi FSQ 106 EDX
Camera: SBIG STL11000
Guiding camera: StarShoot AutoGuider
Guiding scope: Orion ShortTube 80mm
Mount: Takahashi EM-400

Dinosaur Point (12/26/08), Henry Coe (12/30/08)
Seeing: Ok
Transparency: Ok

Stacking: DeepSkyStacker
Processing: PixInsight & Photoshop

This image is the result of three things against me:

1) This nebula is more difficult than I thought.
2) The STL 11k is not particularly sensitive to Ha.
3) I need more experience processing Ha images.

Although in the image you can clearly see the nebula, it was very hard to bring it up. Also, since I was binning 2x2 (!!!), I didn't capture a lot of resolution,and the image is clearly oversampled - we're talking about 7 arcsecs per pixel! Let's call it "an experiment that I probably won't repeat" :-)

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