Near Sadr, HOO (Stephen Garretson)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg)

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Near Sadr, HOO

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Near Sadr, HOO

Been a long drought for me. First with my wrist injury last fall, then equipment changes, and finally galaxy season. I recently set up my dual William Optics 132/ASI 183 MM Pro system again, this time with 0.8x reducer/flatteners so the scopes run at f/5.6 instead of their native f/7. With the dual system that's an equivalent of f/2.8 in terms of imaging time, but without any difficulties from fast optics.

Cygnus is now in range for me after midnight sometime. Gathered data May 19th early morning. Quite a bit of high cirrus in place the whole session, but elected to try and shoot through it anyway. Need to redo flats and shoot -15° darks for the warmer weather.

Not the greatest, result, but a decent start, especially with only 4 hours of data.

2 hours each of Ha and OIII

[24] 300s subs

4 hours total integration

imaging:

WO FLT 132s

ASI ZWO 183 MM Pros

Baader Ha [3.5nm and 7nm] filters

Baader OIII [4.5nm and 8.5nm] filters

guiding:

WO WhiteCat APO Astrograph

ASI ZWO 290 M Mini

Paramount MX+

SkyX, PHD2, SGP, MicroTouch Focus

PixInsight, Preview

The refractors!
ZWO ASI183/QHY183

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Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
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Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
Astrometry.net job	3532215
PixInsight job	7V3NHURTGXN6L5UARGNS8OXBW6UQD6D1
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	20h25m22s.70
RA (top/left)	20h26m56s.52
RA (top/right)	20h27m11s.86
RA (bottom/right)	20h23m47s.49
RA (bottom/left)	20h23m34s.99

Dec (center)	+40°32′57″.2
Dec (top/left)	+40°04′00″.7
Dec (top/right)	+40°59′58″.4
Dec (bottom/right)	+41°01′49″.4
Dec (bottom/left)	+40°05′50″.1

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Near Sadr, HOO

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