NGC 1637

Show astrometry data

NGC 1637 is an intermediate spiral galaxy in the constellation Eridanus, approximately 35 million light years from Earth.

Photographing this galaxy proved quite a challenge, not only because of our light polluted skies but also the galaxy's apparent size. It is 4x3.4 arcminutes, or about 1/8 the diameter of the moon from our point of view (about 1/15 of the width of your little finger if held at arm's length). It is also exceedingly dim at magnitude 11.5.

We used 6 telescopes to capture this galaxy. 600mm and 400mm systems captured luminance detail, and our 4-scope 300mm widefield array captured RGB color. A total of almost 59 hours was captured over a four night period.

Object details

Galaxy in Eridanus

Right Ascension: 4h 41m 28.2s

Declination: −02° 51′ 29″

Magnitude: 11.5

Moon Age Average: N/A

Moon Phase Average: N/A

Imaging Setup

Location:

SC Observatory, Central Thailand

Date:
Jan 23, 2019, Jan 24, 2019, Jan 25, 2019 and Jan 26, 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
L Astrodon 1x 106 480

Imaging Setup

Location:

SC Observatory, Central Thailand

Date:
Jan 23, 2019, Jan 24, 2019, Jan 25, 2019 and Jan 26, 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
L Astrodon 1x 39 360
L Astrodon 1x 74 420

Imaging Setup

Location:

SC Observatory, Central Thailand

Date:
Jan 24, 2019, Jan 25, 2019 and Jan 26, 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
R Astrodon 1x 23 300
R Astrodon 1x 60 240
B Astrodon 1x 49 300

Imaging Setup

Location:

SC Observatory, Central Thailand

Date:
Jan 24, 2019, Jan 25, 2019 and Jan 26, 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
R Baader 1x 20 300
R Baader 1x 30 240

Imaging Setup

Location:

SC Observatory, Central Thailand

Date:
Jan 24, 2019, Jan 25, 2019 and Jan 26, 2019
Telescope:
Officina Stellare Veloce RH 300
Focal Length:
900 mm
F-Ratio:
F/3
Mount:
Officina Stellare Polar Fork
Camera:
FLI ML 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
G FLI Chroma 1x 61 300
G FLI Chroma 1x 60 240

Imaging Setup

Location:

SC Observatory, Central Thailand

Date:
Jan 24, 2019, Jan 25, 2019 and Jan 26, 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
B Astrodon 1x 62 300
B Astrodon 1x 62 240

Total Exposure Time

58 hours, 43 minutes

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