A small part of the Sadr Region

[Menno555]

I've never made a deep sky mosaic, so decided for a simple 2-part mosaic of a busy part of the sky at 2032mm focal length: the Sadr Region.
Became a bit of a frustration object cause of the weather: in 2 months I gathered just 2 x 2.5 hours of data
But here the result. Could be way batter but I really want to focus on small(er) object, so I call this a day.

For reference, here what part I did capture. Star in the left upper corner is Sadr.

ref.jpg (485.12 KiB) Viewed 350 times

Filters used are the Optolong L-eNhance and L-eXtreme
The grey scale version is Ha only. Made it gray scale because it's way easier to look at and it gives a nice result.
The colour version is RGB Ha/OIII. Not really satisfied with it cause of the only 2.5 hours data for each panel, but it is what it is.
For the original size (3600 x 4000px), right click the image and choose to open in a new tab in your browser.
For reference: in this FOV you could just fit 2 full moons.







Bortle 6/7
Meade LX200 8" f/10 ACF OTA
Ioptron CEM25EC mount (no guiding)
Optolong L-eNhance filter
Optolong L-eXtreme filter
Zwo ASI071MC Pro camera

Captured with SharpCap Pro @ -10 Celsius / White balance R50 B50
L-eNhance: 2 x (18 x 300sec / Gain 90 / Offset 4)
L-eXtreme: 2 x (6 x 600sec / Gain 90 / Offset 4)
Darks + (dark)flats

Stacked with SiriL (m.b.v. SiriLic)

Mosaic made with Microsoft ICE

Processed in SiriL and Photoshop

[admin]

Hi Menno,

very nice - I think you are right that the mono version has a bit more to it than the colour one, but the colour one is still nicely smooth without colour noise or anything like that.

I can't see any sign of the stitching point between the two panels, so that must have aligned really nicely.

cheers,

Robin

[turfpit]

Menno

Turned out well - no seams visible. Mosaics are hard work, don't underestimate the time taken to accumulate the panels. Leandro and I found that out with viewtopic.php?t=7696. It took 16 nights with 2 months of elapsed time to acquire 4 panels of data.

Dave

[Menno555]

Thanks Robin and Dave
I made an overlap of around 25% and I used Microsoft ICE to stitch the two panels. I know it does a great job with moon mosaics but was not sure about deepsky like this. So in Photoshop I used it as layer on an existing pro capture of that area and all stars, clouds and regions did correspond with it.

Menno