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Sh2 93 15 1h HA exposures, Jerry Yesavage

Sh2 93 15 1h HA exposures

Equipment

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Acquisition details

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Description

First image was my standard RGB HA treatment. The second is based on my testing an HA filter for my Nikon and I center than image on Sh2 93. I run the exposures for 1h while the Nikon is shooting away guided by the same system as the Stellarvue.

In any case, there seems to be a lot to be gained by the very long exposures.

Galaxymap basic info:

Ionised by the O9V star [F89b] S93 1 and contains the infrared star cluster [BDS2003].

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

I have been on a project for several years now to image all the Sharpless2 Objects that I can see from my location near San Francisco. I chose these because they are visible in light polluted areas. These objects generally represent left over Hydrogen along the edge of the Milky Way that has gotten molded into interesting shapes.

There are 313 Sh2 objects and those below 70 and above 280 are generally too low on the horizon for me to image... this leaves me 210 that are feasible... and I have imaged all of these but 26. 11 of these are too big for my system. 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.

This is my collection:

Sharpless2

Please note there is also a Sharpless2 Group with now more than 1000 examples.

Hope you enjoy these obscure but interesting objects...

Comments

Revisions

  • Sh2 93 15 1h HA exposures, Jerry Yesavage
    Original
  • Sh2 93 15 1h HA exposures, Jerry Yesavage
    C
  • Final
    Sh2 93 15 1h HA exposures, Jerry Yesavage
    D

C

Description: 15 x 1h hydrogen alpha stretched on destarred imaged and stars returned.

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D

Description: Destarred final version

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Histogram

Sh2 93 15 1h HA exposures, Jerry Yesavage

In these collections

Sharpless2 Objects