Hemisphere:  Northern  ·  Constellation: Hercules (Her)  ·  Contains:  Great Cluster in Hercules  ·  M 13  ·  NGC 6205
M13 taken with iStar Asteria 204-8 R35, 



    
        

            JasonC
M13 taken with iStar Asteria 204-8 R35
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M13 taken with iStar Asteria 204-8 R35, 



    
        

            JasonC
M13 taken with iStar Asteria 204-8 R35
Powered byPixInsight

Technical card

Imaging telescopes or lenses: Istar Optical Asteria 204-8 R35

Imaging cameras: QSI 6120wsg-5

Mounts: Losmandy G11

Guiding telescopes or lenses: Orion 50mm Guide Scope Orion

Guiding cameras: QHY5L-II-M QHY5L-II Mono

Software: Nebulosity3 Nebulosity 3.2.0  ·  PHD Lab PHD Guiding 2.3.1  ·  Photoshop CC

Filters: Baader UV/IR-Cut 2"  ·  Astrodon Ha 3nm  ·  Baader OIII 8.5nm 2"


Dates:July 11, 2015

Frames:
Astrodon Ha 3nm: 10x300" (50') (gain: 100.00) -10C bin 2x2
Baader OIII 8.5nm 2": 12x300" (1h) (gain: 100.00) -10C bin 2x2
Baader UV/IR-Cut 2": 10x60" (10') (gain: 100.00) -10C bin 1x1
Baader UV/IR-Cut 2": 30x60" (30') (gain: 100.00) -10C bin 2x2

Integration: 2h 30'

Darks: 28

Avg. Moon age: 24.95 days

Avg. Moon phase: 21.94%


Basic astrometry details

Astrometry.net job: 686604

RA center: 16h41m36s.5

DEC center: +36°2443

Pixel scale: 0.555 arcsec/pixel

Orientation: -101.810 degrees

Field radius: 0.238 degrees


Resolution: 2496x1816

Locations: Home Observatory, Seoul, Insadong, Korea, Republic of

Description

Image taken with my iStar Asteria 204mm aperture, f/8 refractor. Not an apochromatic, but a pretty good quality lense controls chromatic aberration. According to iStar Optical, this lense reduces chromatic aberration by 35% compared to an achromat of similar size/f ratio.

Image is a combination of Ha, OIII and Luminance data.

Comments

Sky plot

Sky plot

Histogram

M13 taken with iStar Asteria 204-8 R35, 



    
        

            JasonC