domingo, 24 de outubro de 2010

Seven Sisters

I took the mount for a test drive and it was a challenging first time. After several try's i was able to do a rough polar and 3-star alignment. Far from perfect the mount was pointing close to the chosen objects, so why not some photos?

I was not prepared to do exposures, the plan was to test the mount. It was impossible to resist and the camera was out in a flash. Unfortunately i was low on battery and could only capture a couple of photons.

The target was the beautiful M45 - Pleiades Star Cluster. I plan to revisit this part of the sky to do a project with better equipment, more exposure time and better processing.




Image Data: Pleiades Open Star Cluster (Messier 45)

Lens/Scope: Canon 18-55 f/3.5-5.6 EF-S Zoom IS Lens
Focal Length: 55mm
F/Stop: f/6.3
Exposure: Stack of fourteen 90-second exposures (21 minute total exposure)
Mount: Sky-Watcher HEQ5 Pro SynScan GoTo (EQMOD Control)
Guiding: None
Camera: Unmodified Canon 500D (Digital Rebel T1i)
Mode: Raw
ISO: 800
White Balance: Custom, set on sky background
In-Camera Noise Reduction: Off
Filter: None
Date: October 03, 2010
Location: Beja, Portugal
Calibration: Dark frames were subtracted from each individual light frame to remove the thermal signal. Fourteen Dark Frames.
Processing: Calibrated, aligned and stacked in DSS. Levels, curves, brightness and contrast enhancement, noise reduction, cropped, resampled in Photoshop. Carboni Tools.

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