StarTools

I imaged the Tarantula at my Dark Site with a much bigger telescope back in September and wanted to see how these Antlia 3nm filters hold up when subjected to a heavy light polluted Sky with a Full Moon overhead and more importantly limited data.Same object NGC 2070 but completely different conditions.

Bortle 8
Full Moon
Suburban backyard
8” f5 Klaus Helmerich Carbon fibre Newt
SW EQ6-R pro mount
ZWO2600MM cooled to -10C , Gain 100
ZWO 7x2” EFW
ZWO EAF
Antlia 3nm Ha filter only
Orion 60mm guide scope
ZWO290MM guide camera

Ha 35 x 3 min dithered subs
Flats
Bias
EQMOD and Stellarium
APT
PHD2 Multistar guiding PPEC algorithm
Stacked in ASTAP
Processed in Startools v1.8

Again Startools Spatially Variant PSF Deconvolution did a good job at correcting atmospheric blur at these low altitudes

Ha only ( Synthetic Luminance )
Native frame version
Crop version

The result out of this Antlia 3nm Ha filter was extremely pleasing. The noise gradient from severe light pollution and moon glare was manageable and Startools did a good job at cleaning the image up ready for processing.

NB: At my City suburban backyard I only have a 2 hour window to capture data on this object as my roof and a large tree obstruct its view below 35 degrees and above 50 degrees.

Original frame size version < 500KB
Crop version < 500KB

Link to Astrobin below for full resolution….

https://www.astrobin.com/qlr2p1/

Comments welcome
Thanks for looking
Martin

Looks great to me. Are you planning to take color too?

fmeireso wrote: ↑Wed Nov 01, 2023 7:12 am Looks great to me. Are you planning to take color too?

Thanks
Yes it’s a works in progress with Mono and filters
At my City / suburban residence I only get a glance at this object (just under 2 hrs ) so I captured a bit of Ha last week on a rare clear night to test out the filter under the extreme conditions.
Lately we’re only getting 1 clear night every 2 to 3 weeks so I may not finish it for months , by then it’s out of view.
At my dark site Dome down south I have clear view of it from 20 degrees up so might be able to complete this object down there by January.

Clear skies
Martin