Celestial hemisphere:  Northern  ·  Constellation: Auriga (Aur)  ·  Contains:  24 Aur  ·  24 phi Aur  ·  25 Aur  ·  25 chi Aur  ·  B226  ·  B34  ·  HD243461  ·  HD243478  ·  HD243492  ·  HD243502  ·  HD243503  ·  HD243522  ·  HD243523  ·  HD243524  ·  HD243525  ·  HD243537  ·  HD243538  ·  HD243539  ·  HD243540  ·  HD243555  ·  HD243556  ·  HD243557  ·  HD243572  ·  HD243574  ·  HD243575  ·  HD243607  ·  HD243608  ·  HD243622  ·  HD243623  ·  HD243624  ·  And 517 more.
Getting plate-solving status, please wait...
GSC 4212: 0865 Area, Ha, Stephen Garretson
Powered byPixInsight

GSC 4212: 0865 Area, Ha

Getting plate-solving status, please wait...
GSC 4212: 0865 Area, Ha, Stephen Garretson
Powered byPixInsight

GSC 4212: 0865 Area, Ha

Equipment

Loading...

Acquisition details

Loading...

Description

Recently I shot the area around the Witch Head Nebula and NGC 1788 in Ha, acting on a comment in Bracken's sky atlas that there was quite a bit of HII nebulosity surrounding these reflection nebulae. Pretty pleased with the surprising result [did not post this to LAS yet], I wondered what I'd find if I cast my net in some other areas, not looking to capture a specific target, but to simply see what's there. The area near the Flame, Tadpoles, etc has a lot of HII nebulosity, and given the time of year was accessible. I didn't want the Flame or Tadpoles in the frame, but elected to include the Spider and the Fly as sort of touchstones to keep my bearings. This is the result. The most fun is the large circular object in the upper right, which I don't believe I had seen before, Sh2-232, the Great Pumpkin Nebula. This image is obviously just Ha, but there is well enough OIII and SII for SHO, and if we get any more decent nights soon I will add those datasets.

[6] guided 300s Ha subs
[32] guided 600s Ha subs
total integration: 5 hours, 50 minutes

capture:
For this image each of the three imaging setups is composed of:
Borg 55FL f/3.6, 6 element Petzval Astrograph
ASI 2600MM Pro
Gerd Neumann Camera Tilt Adjuster
ZWO EAF
ZWO EFW
Chroma 3nm Ha filter
Chroma 3nm OIII filter
ADM Aimer

guiding:
William Optics 50 x 200 Guide Scope
ASI 290M Mini 

Paramount MX+

from the Beevo Dome

TheSkyX, SGP, PHD2
PixInsight, Mac OS Photos, Preview

...Stephen

Comments

Sky plot

Sky plot

Histogram

GSC 4212: 0865 Area, Ha, Stephen Garretson

In these public groups

The refractors!