NGC 1499, California Nebula, Quantaray OSC Hα, 23 Oct 2015, False Color Animation (David Dearden)

NGC 1499, California Nebula, Quantaray OSC Hα, 23 Oct 2015, False Color Animation

An easy find using Astrotortilla plate solves by just pointing in the general direction, plate solving, and doing a goto from Cartes du Ciel. First light for the Quantaray 28-90 zoom lens mounted on 2.9" tube rings (I clamped the camera to my ST80 tube rings in my 2 previous trial runs; I’ll put up a gear image later). This is also my first attempt to do a narrowband image with this setup, and it is my first-ever attempt to use 20-minute subs. Fortunately, it looks like my mounting arrangement is stable enough that I don't have too much differential flexure over 20 minutes, but of course using a 90 mm focal length makes the guiding trivially easy compared to what I'm used to. Overall, I'm quite happy with the result. It is really nice to have a way to get a 4° field of view with my little imager.

Date: 23 Oct 2015

Subject: NGC 1499, California Nebula

Scope: Quantaray 28-90 zoom lens at 90 mm setting

Filter: Baader 7 nm Hα

Mount: CG-5 (Synta motors, PicGoto Simplificado)

Guiding: Orion ST-80 + DSI Ic + PHD 2.5.0.5 (Win 7 ASCOM)

Camera: DSI IIc, no chiller CCD 10 °C

Acquisition: Nebulosity 4.0.3, no dither

Exposure: 15x1200 s

Stacking: Neb 4, bad pixel map, bias included, 33 flats, extract R channel, match histograms, square, trans+rot align, DSS 3x drizzle 1.75 average κ-σ stack.

Processing: StarTools 1.4.305 Crop; Wipe 75%; Develop 77.60%; HDR optimize; Deconvolute 4.6 pix; Track 9.0 pix, Smoothness 88%. CS6 Astronomy Tools deep space noise reduction; space noise reduction; levels & curves; Gradient Xterminator; Hα false color black space; Astroframe; create frame animation.

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Status	Advanced failed
Started	...
Astrometry.net job	823776
PixInsight job	I7SNW31AI8IHFOLMHA84V577HCBYTQR6
PixInsight queue size	n/a
PixInsight stage	PLATE_SOLVING_IMAGE

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NGC 1499, California Nebula, Quantaray OSC Hα, 23 Oct 2015, False Color Animation

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NGC 1499, California Nebula, Quantaray OSC Hα, 23 Oct 2015, False Color Animation

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