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Image Data
Telescope: 10″ Aries f/15 Maksutov-Cassegrain on Astro-Physics 900GTO German Equatorial
Accessories: Moravian G1-0300 as Off-Axis Guider, 0.67X Astro-Physics CCD Telecompressor
Focal Length and Resolution: 2692 mm, 0.52″/pixel
Instrument: QSI 532wsg at -20 deg. C
Exposures: H-alpha: 10×20 min, O-III: 4×20 min. Total: 4.7 hours
Filter(s): Astrodon Narrowband
Exposure Date: 9-10 April 2011
Seeing, FWHM: 1.8″
Processing Software: MaximDL, PixInsight, Photoshop
Image Acquisition Software: MaximDL, TheSky6, CCDAutoPilot, FocusMax, PinPoint
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Object Data
Constellation: Ursa Major
Type: Planetary Nebula
Distance: 2,600 ly
Dimensions: ~3.3′
Magnitude: 9.9 (V)
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Processing Procedure
H-alpha mapped to red, O-III to blue and green.
NASA/ADS Query
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