Antares - Rho Ophiuchi Widefield (Gabriel R. Santos (grsotnas))

Celestial hemisphere: Southern · Constellation: Scorpius (Sco) · Contains: IC 4603 · IC 4604 · IC 4605 · M 4 · NGC 6121 · Part of the constellation Scorpius (Sco) · The star 22Sco · The star Al Niyat (σSco) · The star Antares (αSco) · The star οSco · The star ρOph · The star τSco · The star ωOph · rho Oph Nebula

Antares - Rho Ophiuchi Widefield

This is the result of a rather unpretentious dataset, captured with the 135mm lens piggybacked on my telescope while it captured a mosaic of Rho-Oph area. This is the result of 7 panels with very generous overlap (since the mosaic was planned/pointed with the tighter FoV of the telescope) - the final FoV is similar to what a 1x2 mosaic would capture, with the center of the image receiving more integration time than the borders.

Please note the natural gradient in the image: this is not light pollution (in fact, this region crosses zenith from my location - I did not use any kind of gradient extraction/subtraction). It is a gradual, natural gradient caused by the increase in the number of stars towards the central Milky Way bulge. Overall, I was pleased to have this somewhat unplanned/2nd priority result, with a relatively simple equipment (entry-level DSLR + 135mm lens) and short integration time of a little more than 1h.

Constructive criticism, comments and suggestions are more than welcome in the comments section!

Date: 16 June 2021
Location: My Observatory, MG, Brazil. Rural Skies (Bortle 3, calculated SQM ~21.6)
Camera: Canon EOS T5/1200D (mod) at ISO 1600
Optics: Samyang 135mm f/2 lens, operated at f/2.4
Mount: Sky-Watcher HEQ5, tracking, guided
Exposure Detail: 7-panel mosaic (generous overlap). Total integration 40x120s = 1.3h.
Processing software: APP, PI, PS

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Description: Annotated with PI

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Camera Lens Astrophotography
Samyang 135 f/2
Objects of the South - negative declination only
DSLR/Mirrorless Imagers from the World
Deep Sky Mosaics
Cloudy Nights

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PixInsight job	LM70JKYYNN41OU1ZD7PVUH1HJYNTC90F
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Antares - Rho Ophiuchi Widefield

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