Sh2 253 (Jerry Yesavage)

Sh2 253

Another redo with my new equipment now that I have gotten the field flat. Goal was to get tiny stars across the whole field. This was the last Sharpless Object in the Milky Way I could image this year and it was low. It does give a good star test.

Prior version 9h on CCD:

Sh2 253 H-alpha RGB

From GalaxyMap:

Sh 2-253 is ionised by stars in the Bochum 1 star cluster, including the B 1.5 V class LS V +20 40.

GENERAL NOTE ON SHARPLESS2 OBJECTS>>>>>>>>>>>>>

There are 313 Sh2 objects. As of the date of this image I had imaged 313 (100%).

Some of the challenges with this series are FOV size and low declination:

There are 11 too diffuse/large to image well with my set up (Sh2 111, 117, 122, 131, 132, 145, 178, 218, 230, 268 and 310). I have imaged the first 6 of these mostly in the Nikon Wide angle shot referenced below and 178 and 230 as part of other images.

There are 5 that are never above 14 DEG (Sh2 2-6) but as of 7/12/21 I can get these now with pier upgrades and the images are completed as best as I can.

Many were taken with my old Tak 180 ED, which had a wide field of view, but was replaced with my Stellarvue 130, which is more narrow field. I have also taken two very wide field HA images with my Nikon D800 and a 50mm lens. I transitioned from my CCD SBIG 8300M to a CMOS ZWO ASI6200M Pro in September 2021.

The first one was taken on December 23, 2013 and the series completed October 17, 2019.

This is my collection:

Sharpless2

Wide-Angle Hydrogen Alpha Nikon Image Sh2 79-171

Please note there is also a Sharpless2 Group with now more than 1500 examples.

Sharpless2 Group

Other useful links include:

Gary Imm's Collection

GalaxyMap's Collection

The Sharpless Catalog

The MDW H-alpha Sky Survey

Reiner Vogel's detailed observing catalog

Hope you enjoy these obscure but interesting objects...

Sharpless2 Objects
Light Polluted skies
ASI 6200 MM Pro
The refractors!
Cloudy Nights
Fine Art Astrophotography
SF Bay Area Imagers
Astrophotographes (France)
Narrowband imaging
Suburban Astrophotography

Sharpless2 Objects

	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

	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

	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

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
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Status	Advanced success
Started	...
Astrometry.net job	5664423
PixInsight job	HTRDMWMDG9KMMFGA3KD1L3FXEQROI63G
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	06h25m44s.858
RA (top/left)	06h21m13s.908
RA (top/right)	06h30m18s.926
RA (bottom/right)	06h30m19s.150
RA (bottom/left)	06h21m08s.591

Dec (center)	+20°01′48″.35
Dec (top/left)	+19°18′17″.48
Dec (top/right)	+19°19′26″.58
Dec (bottom/right)	+20°44′40″.62
Dec (bottom/left)	+20°43′42″.41

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Sh2 253

Sh2 253

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Sh2 253

Sh2 253

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