Hemisphere:  Northern  ·  Constellation: Leo (Leo)  ·  Contains:  M 105  ·  M 95  ·  M 96  ·  NGC 3351  ·  NGC 3368  ·  NGC 3379  ·  NGC 3384  ·  NGC 3389
Getting plate-solving status, please wait...
Galaxies in Leo (M95 M96 M105) Takahashi Collimation Testing, 



    
        

            jerryyyyy
Galaxies in Leo (M95 M96 M105) Takahashi Collimation Testing
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Galaxies in Leo (M95 M96 M105) Takahashi Collimation Testing

Imaging telescopes or lenses: Takahashi Epsilon 180ED

Imaging cameras: SBIG STT 8300M

Mounts: Orion Atlas EQ-G

Guiding telescopes or lenses: Takahashi Epsilon 180ED

Guiding cameras: SBIG STT 8300M

Software: PixInsight  ·  Maxim DL

Filters: Baader LRGB 1.25'' Filters


Dates:April 20, 2014

Frames:
Baader B 1.25'' Filter: 4x130" (8' 40") bin 2x2
Baader G 1.25'' Filter: 4x100" (6' 40") bin 2x2
Baader L 1.25'' Filter: 12x100" (20') bin 1x1
Baader R 1.25'' Filter: 4x100" (6' 40") bin 2x2

Integration: 42'

Avg. Moon age: 20.18 days

Avg. Moon phase: 70.35%


Astrometry.net job: 226052

RA center: 10h 46' 13"

DEC center: +12° 6' 25"

Pixel scale: 2.215 arcsec/pixel

Orientation: -89.268 degrees

Field radius: 1.281 degrees


Resolution: 620x469

Locations: Stanford Faculty Observatory (Bortle 6 SQM 18.6), Stanford, California, United States

Description

Finally seem to be getting into production with the Takahashi. These were collected and processed between 9PM and 11PM April 20.

I have discovered that the collimation will change over the night probably due to the heavy (5.2 lb) SBIG camera sitting on the focuser and rotator of the scope. But knowing this, it is not too bad and at least I will not chase my tail.

Scope remains focused over several days.

Processing follows:

http://pixinsight.com.ar/en/info/processing-examples/13/m-97-owl-nebula.html

Except no deconvolution. I will try a variant later but not fully happy deconvoluting the L alone. The image integration is done with the PI AIP script.

Thanks to everyone for all the comments to help getting this puppy to hunt.

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Galaxies in Leo (M95 M96 M105) Takahashi Collimation Testing, 



    
        

            jerryyyyy

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