Hemisphere:  Southern  ·  Constellation: Eridanus (Eri)  ·  Contains:  NGC 1637  ·  NGC1637
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NGC 1637, 


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NGC 1637

Getting plate-solving status, please wait...
NGC 1637, 


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NGC 1637

Imaging telescopes or lenses: Planewave CDK24

Imaging cameras: FLI Proline 16803

Mounts: Planewave L600

Guiding cameras: Starlight Xpress Ultrastar

Focal reducers: None

Software: Planewave PWI3  ·  Planewave PWI4  ·  PixInsight 1.8  ·  Sequence Generator Pro  ·  Photoshop CS3  ·  PHD Guiding 2  ·  CCDWare CCD Inspector  ·  Maxim DL6

Filters: Astrodon 50mm B  ·  Astrodon 50mm R  ·  Astrodon 50mm L  ·  Astrodon 50 mm G

Accessory: FLI CFW-5-7  ·  Astrodon Monster MOAG  ·  Hedrick Focuser  ·  Planewave Delta-T  ·  Planewave EFA

Dates:Jan. 25, 2020Jan. 27, 2020Jan. 28, 2020Jan. 29, 2020

Astrodon 50 mm G: 7x900" (1h 45') -30C bin 1x1
Astrodon 50mm B: 11x900" (2h 45') -30C bin 1x1
Astrodon 50mm L: 24x900" (6h) -30C bin 1x1
Astrodon 50mm R: 11x900" (2h 45') -30C bin 1x1

Integration: 13h 15'

Darks: ~20

Flats: ~80

Flat darks: ~80

Bias: ~20

Avg. Moon age: 2.62 days

Avg. Moon phase: 9.33%

Mean SQM: 21.30

Mean FWHM: 2.50

Astrometry.net job: 3375713

RA center: 4h 41' 31"

DEC center: -2° 53' 14"

Pixel scale: 0.468 arcsec/pixel

Orientation: -178.173 degrees

Field radius: 0.307 degrees

Resolution: 3396x3288

Locations: KG Observatory, Julian, CA, United States

Data source: Backyard


When a supernova was discovered in NGC 1637 in 1999, it immediately became the focus of very large telescopes...

NGC 1637 from ESO's Very Large Telescope

Today NGC 1637 is rarely imaged. Here's one from the Liverpool Telescope on Astrobin...

NGC 1637 from the Liverpool Telescope

And from Adam Block in a 16" RC...

NGC 1637 from Adam Block 16" RC

I was hoping to get somewhere between ESO's VLT and Adam Block. (-; FWHM on 15 minute subs was around 2.5" these nights, so not the best resolution. But I'm pleased to be able to extract the very faint spiral arms.

"NGC 1637 is a barred spiral galaxy that lies about 38 million light-years away in the southern constellation of Eridanus (the River). The galaxy is lit by the glow of about fifty billion stars. In its center lurks a supermassive black hole.

In 1999 scientists discovered a Type II supernova in this galaxy and followed its slow fading over the following years. Because of its relative proximity, SN 1999em got bright enough to be seen even with small telescopes, and it became one of the best observed supernovae of its day."

More info...

More NGC 1637 info


Sky plot

Sky plot


NGC 1637, 



In these public groups

Unique or Unusal Deep Sky Targets