Hemisphere:  Southern  ·  Constellation: Tucana (Tuc)  ·  Contains:  IC1655  ·  NGC 292  ·  NGC 330  ·  NGC 346  ·  NGC 361  ·  NGC 362  ·  NGC 371  ·  NGC 458  ·  NGC292  ·  NGC299  ·  NGC306  ·  NGC330  ·  NGC346  ·  NGC361  ·  NGC362  ·  NGC371  ·  NGC416  ·  Small Magellanic Cloud
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Emission Nebulas in the Small Magellanic Cloud, 


            Diego Cartes
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Emission Nebulas in the Small Magellanic Cloud

Imaging telescopes or lenses: Televue TV-76

Imaging cameras: ZWO ASI 1600MM Cooled Pro

Mounts: Celestron Advanced VX

Guiding telescopes or lenses: Celestron 50mm Guide Scope  ·  ZWO 60mm Guidescope

Guiding cameras: ZWO ASI 290mm Mini

Focal reducers: Televue 0.8x focal reducer / field flattener

Software: PixInsight 1.8 Pisinsight 1.8  ·  Sequence Generator Pro

Filters: ZWO OIII -7nm 36mm  ·  ZWO H-alpha 36mm

Accessory: ZWO 7x 36mm Filter Wheel (EFW)  ·  Intel NUC  ·  Arduino ASCOM Focuser Pro2  ·  QHYCCD Polemaster

Dates:July 25, 2020July 29, 2020Aug. 20, 2020Aug. 21, 2020Aug. 22, 2020

ZWO OIII -7nm 36mm: 57x600" bin 1x1
ZWO H-alpha 36mm: 75x600" bin 1x1

Integration: 22.0 hours

Darks: ~46

Flats: ~28

Bias: ~46

Avg. Moon age: 4.55 days

Avg. Moon phase: 25.11%

Astrometry.net job: 3789489

RA center: 1h 0' 5"

DEC center: -72° 2' 4"

Pixel scale: 2.061 arcsec/pixel

Orientation: -41.266 degrees

Field radius: 1.532 degrees

Resolution: 4291x3202

Locations: Backyard, Colina, Region Metropolitana, Chile

Data source: Backyard


This is a bicolor image of the emission nebulas in the Small Magellanic Cloud. The biggest nebula is NGC 346, a star-forming region about 200 light-years across.

From my location, this object is in the most light polluted part of the sky. I struggled to raise the signal-to-noise ratio in this image, adding more subframes, but had little success. Maybe my next step should be increasing the exposure time of each sub.