Celestial hemisphere:  Southern  ·  Constellation: Serpens (Ser)  ·  Contains:  Sh2-46
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Sh2 46, Jerry Yesavage
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Sh2 46

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Sh2 46, Jerry Yesavage
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Sh2 46

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Description

Standard minimalist processing.

From GalaxyMap:

This isolated nebula is located well above the galactic plane.

Avedisova concludes that it is ionised by the potential runaway O9.5 Iab supergiant HD 165319, which may have been ejected from NGC 6611, the central star cluster of M 16, the Eagle nebula, about 1.8 million years ago.

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

There are 313 Sh2 objects.  As of the date of this image I had imaged 299 (96%).

Here is the scorecard:

There are 12 too diffuse/large to image well with my set up (Sh2 111, 117, 122, 131, 132, 145, 178, 218, 221, 230, 268 and 310).  I have images the first 6 of these mostly in the Nikon Wide angle shot referenced below and 178 and 230 as part of other images.  I will do the rest at least once as they come into view this year, so I have 4 more of these to do.  I missed 303 and 304 last year running out of time.  So there are 6 more to do here.

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.  There are still 8 low ones between Sh2 30-50 that I can do this summer.

These 14 remaining all are in Expert Scheduler waiting for them to pass by.

The first one was taken on December 23, 2013.

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.

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...

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Sh2 46, Jerry Yesavage

In these public groups

Sharpless2 Objects
Cloudy Nights

In these collections

Sharpless2 Objects