Heart Nebula (IC 1805) Ha + OSC RASA8 (Brandon Tackett)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: IC 1795 · IC 1805 · LBN 645 · LBN 646 · LBN 647 · LBN 648 · LBN 650 · LBN 654 · LBN 655 · LBN 656 · LBN 657 · LDN 1359 · LDN 1360 · LDN 1361 · LDN 1362 · LDN 1363 · LDN 1364 · LDN 1365 · LDN 1366 · LDN 1367 · LDN 1368 · LDN 1369 · LDN 1370 · LDN 1371 · LDN 1372 · LDN 1373 · NGC 896 · Sh2-190

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Heart Nebula (IC 1805) Ha + OSC RASA8

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Heart Nebula (IC 1805) Ha + OSC RASA8

I have a special place in my heart (pun intended) for anatomical appearing structures, but this one takes the cake. The sweeping nebulosity and then the dramatic emphasis that the star reduction creates on the various pillar formations is incredible and the detail when at 1:1 just gets that much better. I keep finding myself starring at the image.

I combined OSC color data from last year (see image B and C for comparison) and added Ha data as a luminance. I then proceed with my recent small star reduction technique using starnet and range masking to removal tiny and small stars to bring out more structure (see small comparison image of Melotte 15 image C). I think the improved signal and progress in my processing really stand out in this image. By no means perfect, but exciting never the less. I still need to refine the star reduction and elimination technique, but that all part of the challenging fun.

IC 1805 is a open cluster of stars surrounded by an mesmerizing hydrogen emission nebula in the constellation of the Cassiopeia. Located in the Perseus arm of the Milky Way, the nebula is a 7,500 light years from earth.

Final
Original
B
C

B

Description: Comparison of OSC edit last year and new edit 2021 with Ha added and new star elimination technique

Uploaded: ...

C

Description: Melotte 15 comparison 2020 vs 2021 with addition of Ha and small/tiny star elimination technique

Uploaded: ...

Celestron RASA
N.I.N.A. Users
Central USA
Sharpless2 Objects

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Status	Advanced success
Started	...
Astrometry.net job	5005262
PixInsight job	1X3CF84JHV3HQA25KLIE9XBCTJQVJ4BL
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h32m20s.31
RA (top/left)	02h40m13s.27
RA (top/right)	02h24m28s.45
RA (bottom/right)	02h25m02s.58
RA (bottom/left)	02h39m36s.13

Dec (center)	+61°18′28″.3
Dec (top/left)	+62°31′06″.3
Dec (top/right)	+62°31′17″.1
Dec (bottom/right)	+60°04′12″.7
Dec (bottom/left)	+60°04′04″.2

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Heart Nebula (IC 1805) Ha + OSC RASA8

Heart Nebula (IC 1805) Ha + OSC RASA8

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Heart Nebula (IC 1805) Ha + OSC RASA8

Heart Nebula (IC 1805) Ha + OSC RASA8

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