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Hartl-Dengel-Weinberger 3: An exceedingly faint ancient planetary nebula Dec 18, 2022 2.9k views4745×34805.7 MB

Classic view
Hartl-Dengel-Weinberger 3: An exceedingly faint ancient planetary nebula
Luca Marinelli
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In 5 groups
Backyard
Home Observatory, Schenectady (New York), US
Bortle
5
N
Per
3h 26m 33s · +45° 22′ 9″
0.89° × 0.65°
0.67″/px
359.71°N
Integration
R
Mix of exposure times
1h 12′
1-2 Oct 2022
39%
G
Mix of exposure times
1h 5′
27 Jan, 31 Jan 2022
15%
B
Mix of exposure times
1h 4′
23 Dec 2021, 11 Jan 2022
75%
Hα
261×600″
43h 30′
28 Oct 2021
53%
OIII
234×600″
39h
30 Nov 2021
20%
Totals
85h 51′
8 days
41%
R
Mix of exposure times=1h 12′
1-2 Oct 2022
39%
G
Mix of exposure times=1h 5′
27 Jan, 31 Jan 2022
15%
B
Mix of exposure times=1h 4′
23 Dec 2021, 11 Jan 2022
75%
Hα
261×600″=43h 30′
28 Oct 2021
53%
OIII
234×600″=39h
30 Nov 2021
20%
Totals85h 51′
8 days 41%
Imaging equipment
Telescope
TS-Optics 250mm/10" ONTC f/4 Newtonian (carbon tube)
Camera
QHYCCD QHY268 M
Mount
Astro-Physics 1100GTO
Filters
Astrodon Gen2 E-series Tru-Balance Blue 36mm
Astrodon Gen2 E-Series Tru-Balance Green 36 mm
Astrodon Gen2 E-series Tru-Balance Red 36mm
Astrodon H-alpha 3nm 36 mm
Astrodon OIII 3nm 36 mm
Accessories
Pegasus Astro Ultimate Powerbox 2
QHYCCD QHYCFW3-M
QHYCCD QHYOAG-M
Tele Vue Paracorr
Software
Adobe Photoshop
Astro-Physics APCC Pro
Main Sequence Software Sequence Generator Pro (SGP)
Open PHD Guiding Project PHD2
Pleiades Astrophoto PixInsight
Guiding equipment
Guiding camera
ZWO ASI174MM Mini
Objects
PK149-09.1
Description
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