Hemisphere:  Southern  ·  Contains:  Horsehead nebula  ·  IC 432  ·  IC 434  ·  IC 435  ·  NGC 2023  ·  NGC 2024  ·  The star Alnitak (ζOri)  ·  The star σOri
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Flame and Horsehead, 


            Mike Miller
Flame and Horsehead
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Flame and Horsehead

Technical card

Imaging telescopes or lenses: William Optics Star 71

Imaging cameras: Atik 490ex Mono

Mounts: Advanced VX

Guiding cameras: Starlight Xpress Loadestar X2

Software: PixInsight

Filters: Ha 12nm

Accessory: Atik EFW2 Filter Wheel

Dates:Oct. 21, 2017

Frames: 11x600"

Integration: 1.8 hours

Avg. Moon age: 1.61 days

Avg. Moon phase: 2.91%

Basic astrometry details

Astrometry.net job: 1938872

RA center: 5h 41' 15"

DEC center: -2° 21' 28"

Pixel scale: 6.088 arcsec/pixel

Orientation: 38.819 degrees

Field radius: 1.299 degrees

Resolution: 1200x960

Data source: Traveller


20 minute exposure on an AVX, what?

This is composed of 6x 5 minute exposures, 4x 10 minute exposures and a single 20 minute exposure for good measure.

Since guiding was doing so well, I decided to push it to the very limit.

The plan is to do HDR here, but the image does need some more processing time to figure it out.



Mike Miller
License: Attribution-NonCommercial-NoDerivs Creative Commons

Sky plot

Sky plot


Flame and Horsehead, 


            Mike Miller

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WO Star 71
Cloudy Nights