Celestial hemisphere:  Northern  ·  Constellation: Taurus (Tau)  ·  Contains:  Barnard's Merope Nebula  ·  IC 349  ·  Maia Nebula  ·  Merope Nebula  ·  NGC 1432  ·  NGC 1435  ·  The star 18Tau  ·  The star Atlas (27Tau)  ·  The star Celaeno (16Tau)  ·  The star Electra (17Tau)  ·  The star Merope (23Tau)  ·  The star Pleione (28Tau)  ·  The star Sterope I (21Tau)  ·  The star Taygeta (19Tau)  ·  The star ηTau
M45 Pleïades, 



    
        

            SicIturAdAstra
M45 Pleïades
Powered byPixInsight

M45 Pleïades

M45 Pleïades, 



    
        

            SicIturAdAstra
M45 Pleïades
Powered byPixInsight

M45 Pleïades

Equipment

Imaging Telescopes Or Lenses
TS Optics TS 65/420 Quadruplet
Imaging Cameras
ZWO ASI533MC Pro
Mounts
iOptron CEM25P
Filters
Optolong UHC
Software
PixInsight · N.I.N.A. Nightly 111
Guiding Telescopes Or Lenses
Altair MG60 Guide Scope
Guiding Cameras
Datyson T7M

Acquisition details

Dates:
Jan. 7, 2021
Frames:
Optolong UHC: 95×240(6h 20′) (gain: 101.00) -20°C bin 1×1
Integration:
6h 20′
Avg. Moon age:
23.32 days
Avg. Moon phase:
37.67%
Bortle Dark-Sky Scale:
5.00

Basic astrometry details

Astrometry.net job: 4170087

RA center: 03h46m59s.0

DEC center: +24°0852

Pixel scale: 0.914 arcsec/pixel

Orientation: 88.342 degrees

Field radius: 1.052 degrees

Resolution: 5864x5864

File size: 14.3 MB

Data source: Backyard

Description

It seems that this filter doesn't cut the IR at all (which I think is the cause of those bloated stars), I reduced the stars a bit but they still annoy me.

Just received a new filter that should do what it's supposed to, cut the UV/IR, but too late!

Subs acquired over three nights (11-22-2020; 01-07-2021; 01-10-2021) with pretty different conditions, not always good.

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Ce filtre ne coupant pas les IR, les étoiles sont totalement étalées (si je ne me trompe pas). Malgré une réduction, ce n'est toujours pas ça...

On verra ce que cela donne avec le nouveau filtre qui, lui, coupe ces satanés IR. Malheureusement, il arrive après la bataille!

Sur trois nuits (22-11-2020; 07-01-2021; 10-01-2021) pas toutes très bonnes.

Comments

Sky plot

Sky plot

Histogram

M45 Pleïades, 



    
        

            SicIturAdAstra