Rho Ophiuchi and Blue Horsehead

[CalvinKlein (Kelvin)]

This is a two pane mosaic I've just completed of Rho Ophiuchi and the Blue Horsehead.

It consists of 8 hours of integration under Bortle 4 (SQM 21.3) skies.

Luminance : 1115 x 10 sec
Red : 80 x 30 sec
Green : 80 x 30 sec
Blue : 150 x 30 sec.
Hydrogen Alpha : 50 x 3 min.

I used an ASI1600 MM-Pro & 8 position EFW with ZWO LRGB and Baader Ha filters, coupled to a Samyang 135mm F2 DSLR Lens. @ F2. All frames used gain 76 offset 20

My mount is a Skywatcher EQ6-R and ZWO 290MM Mini / ZWO 30mmF4 guiding combination.

Capture software Sequence Generator Pro, Ha frames guided with PHD2, integration and mosaic creation in AstroPixel Processor. Final touches & saturation boost in Photoshop.

[Nikolas (Nik)]

To say I am gobsmacked would not do it justice, awesome!

[Atmos (Colin)]

That’s great! The colour is good and it has good depth

[Ryderscope (Rodney)]

A lovely rich wide field image Kelvin.

[multiweb (Marc)]

Superb mosaic Kelvin. Itchin' for a high res though.

[CalvinKlein (Kelvin)]

Originally Posted by multiweb

Superb mosaic Kelvin. Itchin' for a high res though.

Thanks very much Marc. Yes one of these days I'll try it with the refractor once I figure out how to properly frame / platesolve mosaics.

Originally Posted by Ryderscope

A lovely rich wide field image Kelvin.

Thanks Rodney

Originally Posted by Atmos

That’s great! The colour is good and it has good depth

Thank Colin. The big TIF file looks so much better. I've started work again at the same resolution on a 1 x 7 of the Orion region that I began last year, that I hope to eventually expand to 3 x 7. It astounds me the amount of thought, planning and processing required for doing these. I dont know how you manage your gigapixel versions !! They are very inspiring.

Originally Posted by Nikolas

To say I am gobsmacked would not do it justice, awesome!

Thanks Nik

[JA]

That's superb Kelvin

(BTW: you've killed it for "everyone" .... setting a high bar that is. We'll have to out-mosaic your mosaic)

Best
JA

[CalvinKlein (Kelvin)]

Originally Posted by JA

That's superb Kelvin

(BTW: you've killed it for "everyone" .... setting a high bar that is. We'll have to out-mosaic your mosaic)

Best
JA

Thanks JA. I think there are plenty of others who have out-mosaiced me - this is only a relatively easy two-pane. I haven't done so well with larger ones mainly due to mis-management of all the data files. I find it so much easier now that I am (usually) doing just one filter per imaging session.