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Elephant's head nebula in Hydrogen-alpha

Contains: IC 1396

Technical card

Imaging telescope or lens: ED80

Imaging camera: SBIG ST-8300C

Mount: Orion Atlas EQ-G

Guiding telescope or lens: ED80

Guiding camera: The Imaging Source DMK 21AF04

Focal reducer: William Optics FF/FR 0.8x Tipo II

Software: PixInsightphotoshopNebulosityMicroprojects Equinox Image

Filter: Orion H‑Alpha 7nm

Accessory: Orion Thin OAG

Resolution: 1578x1219

Dates: Oct. 14, 2013

Frames: Orion H‑Alpha 7nm: 21x1800" -15C bin 2x2

Integration: 10.5 hours

Avg. Moon age: 9.58 days

Avg. Moon phase: 72.50%

Bortle Dark-Sky Scale: 5.00 job: 88993

Locations: Home, San Rafael, California, United States


This far north, a 30-minute exposure is enough for the stars to show a little image rotation due to the off-axis guiding.





Elephant's head nebula in Hydrogen-alpha, stevebryson