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Bad Astro Photos Astrophotography with ultra portable equipment. astronomy, and art.

The Ghost of Cassiopeiae: Gamma Cas IC 59 & IC 63. 9 hours of broadband color from B3 Bad Wolf Ranch, and 16 hours of N...
10/08/2026

The Ghost of Cassiopeiae: Gamma Cas IC 59 & IC 63. 9 hours of broadband color from B3 Bad Wolf Ranch, and 16 hours of NB OSC with a dual 3nm Ha - Oiii filter from my garden in Austin, Texas B7.
ZWO FF80 600/80mm | L-Ultimate | ASI2600 MC Duo | PixInsight | Affinity Photo

09/11/2026

Want to see a type 1a supernova explosion? I imaged the Deer Lick and Stephan’s Quintet region including NGC 7331 on Aug 13 and Sept 10. On Sept 1, Supernova 2026aaiv was discovered in NGC 7331 by ATLAS an asteroid terrestrial impact warning system. You can see it blink to life in the animation of my two images just to the right of the center of the bright galaxy on the left.

The Deer Lick Galaxy Group and nearby Stephan’s Quintet from Bad Wolf Ranch
09/10/2026

The Deer Lick Galaxy Group and nearby Stephan’s Quintet from Bad Wolf Ranch

The Deerlick Galaxy Group and nearby Stephan’s Quintet (one of the first James Webb targets) on the right. Test data fr...
09/06/2026

The Deerlick Galaxy Group and nearby Stephan’s Quintet (one of the first James Webb targets) on the right. Test data from a couple of weeks back with my 250mm scope. Plan to reshoot with my 600mm scope for a more detailed image.

Another night of data and it's a wrap on the Cresent and Soap Bubble Nebulae at 12+ hours. OSC NB color with a HOhO pal...
09/01/2026

Another night of data and it's a wrap on the Cresent and Soap Bubble Nebulae at 12+ hours. OSC NB color with a HOhO palette. ZWO FF80 | L-Ultimate dual NB filter | ASI2600MC Duo | Pixinsight
From my garden in Austin, Texas under Bortle 7 city skies.

Working on the Crescent and Soap Bubble Nebulae in Cygnus a bit over 8 hours so far from my Bortle 7 Austin garden. 600...
08/31/2026

Working on the Crescent and Soap Bubble Nebulae in Cygnus a bit over 8 hours so far from my Bortle 7 Austin garden. 600/80mm FF80 | L-Ultimate dual NB | ASI2600MC Duo | Pixinsight

Austin City Lights Elephant Trunk Nebula, NGC6946� My third try at this target. 12 hours of exposures on 2026-08-21>22...
08/22/2026

Austin City Lights Elephant Trunk Nebula, NGC6946� My third try at this target. 12 hours of exposures on 2026-08-21>22 under Bortle 7 skies from Austin, Texas, rendered in a modified HOhO palate achieved using the PixInsight Narrowband Normalization tool. I like the framing I was able to achieve with the ASI2600 better than the tighter crop I had with the 533 both with the RedCat 260/51mm
Details and the 50MP original image at: http://astronomy.robpettengill.org/blog260822.html

The 2026 Perseids was pretty lame at Bad Wolf Ranch. I shot over 800 frames with a 20mm lens and only captured 10 brigh...
08/16/2026

The 2026 Perseids was pretty lame at Bad Wolf Ranch. I shot over 800 frames with a 20mm lens and only captured 10 bright ones. I like the rainbow of color as each meteor slows from a hot blue to a cooler red color. This composite captures meteors from an over 7 hour span.

Bad Wolf Ranch M33, the Triangulum Galaxy, 4.5 hours ZWO FF80 600/80mm | ASI2600 MC Duo | ASIAIR + | PixInsight
08/16/2026

Bad Wolf Ranch M33, the Triangulum Galaxy, 4.5 hours
ZWO FF80 600/80mm | ASI2600 MC Duo | ASIAIR + | PixInsight

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