Abell 33

Show astrometry data

Abell 33 is a planetary nebula in the constellation Hydra, approximately 2,500 light years from Earth. A planetary nebula is created when a star blows off its outer layers after running out of fuel.

Abell 33 is off axis to the Milky Way so its expansion remained mostly unhindered by interstellar materials, resulting in its spherical shape. The bright rim is a result of our seeing more gases along the 3-dimensional edge of the bubble. Abell 33 is approximately 4.5 arcminutes in diameter, about 1/7 the diameter of the moon as seen from Earth. The nebula is by chance aligned with a 7th magnitude foreground star along its edge (HD 83535) giving a diamond ring appearance. The nebula's progenitor star, on its way to becoming a white dwarf, is the white spot just off-center inside the bubble.

This narrowband image was shot using Oxygen 3 and Hydrogen Alpha filters, with the Ha mapped to the red channel and O3 mapped to the green and blue channels of this RGB image. Shot with our RiLA 600mm, RiFAST 400mm and four RH 300mm telescopes.

SC Observatory team: Mike Selby, Stefan Schmidt, Andy Chatman

Object details

Planetary Nebula in Hydra

Right Ascension: 09h 39m 09.2s

Declination: −02° 48′ 35″

Magnitude: 13.4

Moon Age Average: N/A

Moon Phase Average: N/A

Imaging Setup

Location:

SC Observatory, Central Thailand

Date:
Jan 23, 2019, Jan 24, 2019 and Jan 25, 2019
Telescope:
Officina Stellare RiLA 600
Focal Length:
3000 mm
F-Ratio:
F/5
Mount:
Officina Stellare Direct Drive Polar Fork
Camera:
FLI ML 16200
Image Scale:
0.41 arcseconds/pixel
Imaging Software:

Voyager

Processing Software:

Adobe Photoshop

PixInsight 1.8

Exposure Detail

Filter Filter Brand Bin Qty Exposure
OIII Astrodon 1x 91 480

Imaging Setup

Location:

SC Observatory, Central Thailand

Date:
Jan 23, 2019, Jan 24, 2019 and Jan 25, 2019
Telescope:
Officina Stellare RiFAST 400
Focal Length:
2280 mm
F-Ratio:
F/5.7
Mount:
Planewave L500 Direct Drive Polar Fork
Camera:
FLI ML 29052
Image Scale:
0.50 arcseconds/pixel
Imaging Software:

Voyager

Processing Software:

Adobe Photoshop

PixInsight 1.8

Exposure Detail

Filter Filter Brand Bin Qty Exposure
OIII Astrodon 1x 60 420

Imaging Setup

Location:

SC Observatory, Central Thailand

Date:
Jan 27, 2019 and Jan 28, 2019
Telescope:
Officina Stellare Veloce RH 300
Focal Length:
900 mm
F-Ratio:
F/3
Mount:
Officina Stellare Polar Fork
Camera:
FLI PL 29052
Image Scale:
1.26 arcseconds/pixel
Imaging Software:

Voyager

Processing Software:

Adobe Photoshop

PixInsight 1.8

Exposure Detail

Filter Filter Brand Bin Qty Exposure
Ha Astrodon 1x 48 360

Imaging Setup

Location:

SC Observatory, Central Thailand

Date:
Jan 27, 2019 and Jan 28, 2019
Telescope:
Officina Stellare Veloce RH 300
Focal Length:
900 mm
F-Ratio:
F/3
Mount:
Officina Stellare Polar Fork
Camera:
FLI PL 16803
Image Scale:
2.06 arcseconds/pixel
Imaging Software:

Voyager

Processing Software:

Adobe Photoshop

PixInsight 1.8

Exposure Detail

Filter Filter Brand Bin Qty Exposure
Ha Baader 1x 49 360

Imaging Setup

Location:

SC Observatory, Central Thailand

Date:
Jan 27, 2019 and Jan 28, 2019
Telescope:
Officina Stellare Veloce RH 300
Focal Length:
900 mm
F-Ratio:
F/3
Mount:
Officina Stellare Polar Fork
Camera:
FLI PL 16803
Image Scale:
2.06 arcseconds/pixel
Imaging Software:

Voyager

Processing Software:

Adobe Photoshop

PixInsight 1.8

Exposure Detail

Filter Filter Brand Bin Qty Exposure
Ha FLI Chroma 1x 47 360

Imaging Setup

Location:

SC Observatory, Central Thailand

Date:
Jan 27, 2019 and Jan 28, 2019
Telescope:
Officina Stellare Veloce RH 300
Focal Length:
900 mm
F-Ratio:
F/3
Mount:
Officina Stellare Polar Fork
Camera:
FLI ML 29052
Image Scale:
1.26 arcseconds/pixel
Imaging Software:

Voyager

Processing Software:

Adobe Photoshop

PixInsight 1.8

Exposure Detail

Filter Filter Brand Bin Qty Exposure
Ha Astrodon 1x 49 360

Total Exposure Time

38 hours, 26 minutes