Re: Dolphin Head Nebula (SH2-308) - 15 degrees above the horizon


Karen Christen
 

Wow, that’s a beauty!  Thanks for sharing it with us!

Karen

AP

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of jypeng@...
Sent: Tuesday, March 23, 2021 5:08 PM
To: main@ap-gto.groups.io
Subject: [ap-gto] Dolphin Head Nebula (SH2-308) - 15 degrees above the horizon

 

Hello
I like to share one of the difficult targets I acquired recently.
This Mach2GTO was tracking (20 minutes guiding) my target very well just 15 degrees above the horizon. No modeling this time due to my model is all above 25 degrees above. 
Excellent mount, Great job, AP!
Thanks,
Jian Yuan Peng

 

Technical details:

Telescope: TEC 160FL + TEC FRC 0.9x

Mount: Astro-Physics Mach 2 GTO

Imaging cameras:ZWO ASI6200MM

Software: PHD2, PixInsight, Lightroom 6.4, Sequence Generator Pro, Photoshop CS6

Location: Palo Alto, California, USA

Total Integration: 26.8 Hours

PhotometricColorCalibration data(before crop):

Resolution ............... 0.392 arcsec/px

Rotation ................. -113.083 deg

Observation start time ... 2021-02-22 07:02:07 UTC

Observation end time ..... 2021-03-13 05:14:25 UTC

Focal distance ........... 989.28 mm

Pixel size ............... 1.88 um

Field of view ............ 1d 11' 25.1" x 1d 8' 12.7"

Image center ............. RA:  6 54 15.613  Dec: -23 55 29.32

 

Filters: Astrodon 50mm Unmounted LRGB Gen2 E-Series Filter Sets

Astrodon 50mm Unmounted 3nm Narrowband Ha, SII, OIII filters

Blue   35x60"   35 Minutes Bin1x1

Green  43x60"   43 Minutes Bin1x1

Red    36x60"   36 Minutes Bin1x1

Ha     12x900" 22x1200"   10.3 Hours Bin1x1

OIII   9x900" 37*1200"    14.5 Hours Bin1x1

 


--
Karen Christen
Astro-Physics

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