Hemisphere:  Northern  ·  Constellation: Taurus (Tau)  ·  Contains:  16 Tau  ·  17 Tau  ·  18 Tau  ·  19 q Tau  ·  20 Tau  ·  21 Tau  ·  22 Tau  ·  23 Tau  ·  24 Tau  ·  25 eta Tau  ·  26 Tau  ·  27 Tau  ·  28 Tau  ·  Alcyone  ·  Asterope  ·  Atlas  ·  Barnard's Merope Nebula  ·  Celaeno  ·  Electra  ·  IC 349  ·  M 45  ·  Maia  ·  Maia Nebula  ·  Merope  ·  Merope Nebula  ·  NGC 1432  ·  NGC 1435  ·  Pleiades  ·  Pleione  ·  Sterope II  ·  And 10 more.
Getting plate-solving status, please wait...
M45 - The Pleiades - Take 3, 



    
        

            Doug Gray
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M45 - The Pleiades - Take 3

Getting plate-solving status, please wait...
M45 - The Pleiades - Take 3, 



    
        

            Doug Gray
Powered byPixInsight

M45 - The Pleiades - Take 3

Imaging telescopes or lenses: William Optics Zenithstar 61

Imaging cameras: ZWO ASI294MM-Pro

Mounts: iOptron CEM70  ·  iOptron Tri-Pier

Guiding telescopes or lenses: ZWO 30mm f/4 Mini Guide Scope

Guiding cameras: ZWO 290MC

Focal reducers: William Optics Flat61 for Z61

Software: Adobe Photoshop  ·  siril  ·  PHD2 Guiding

Filters: Optolong L 36mm  ·  Optolong B 36mm  ·  Optolong G 36mm  ·  Optolong R 36mm

Accessory: ZWO ASIAir Pro  ·  ZWO EFW 7x36mm


Dates:Jan. 15, 2021Jan. 16, 2021Jan. 18, 2021

Frames:
Optolong B 36mm: 53x60" (53') (gain: 120.00) -10C bin 2x2
Optolong G 36mm: 55x60" (55') (gain: 120.00) -10C bin 2x2
Optolong L 36mm: 67x60" (1h 7') (gain: 120.00) -10C bin 1x1
Optolong R 36mm: 47x60" (47') (gain: 120.00) -10C bin 2x2

Integration: 3h 42'

Darks: 30

Flats: 30

Bias: 30

Avg. Moon age: 3.66 days

Avg. Moon phase: 15.49%


Astrometry.net job: 4218399

RA center: 3h 46' 56"

DEC center: +24° 5' 38"

Pixel scale: 1.548 arcsec/pixel

Orientation: -78.406 degrees

Field radius: 1.400 degrees


Resolution: 5131x4000

Locations: Backyard, Redwood City, CA, United States

Data source: Backyard

Description

This is one of the targets I've shot multiple times to get a sense of how my skills and equipment have improved over time. Same scope, but the first was 20' with a DSLR and a star adventerer, the second was over an hour with the CEM70. This one is over 3 hours with the ASI294MM and Optolong LRGB filters. I'm pretty happy with how this one turned out, but I'm starting to really understand what others mean when they complain about star bloat. When I eventually get a larger scope, if it's a refractor it's definitely going to be a triplet.

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M45 - The Pleiades - Take 3, 



    
        

            Doug Gray