Antlia 3nm Ha Filter Test NGC 2070 Tarantula Nebula (Martin Dowd)

Celestial hemisphere: Southern · Constellation: Dorado (Dor) · Contains: 30 Dor Cluster · NGC 2042 · NGC 2044 · NGC 2050 · NGC 2055 · NGC 2060 · NGC 2069 · NGC 2070 · NGC 2074 · NGC 2081 · NGC 2091 · NGC 2092 · NGC 2093 · NGC 2094 · NGC 2100 · NGC 2102 · Tarantula Nebula

Antlia 3nm Ha Filter Test NGC 2070 Tarantula Nebula, Martin Dowd

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Antlia 3nm Ha Filter Test NGC 2070 Tarantula Nebula

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Antlia 3nm Ha Filter Test NGC 2070 Tarantula Nebula

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 it’s view below 35 degrees and above 50 degrees.

Thanks for looking
Comments welcome
Martin

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Antlia 3nm Ha Filter Test NGC 2070 Tarantula Nebula

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