Arp 188  -  Tadpole Galaxy

100%  resolution (1.1MB)

150% crop (0.3MB)

Object identification (1.1MB)

DSLR widefield image

Object data of Arp188

Object type: Galaxy (SBc)
Size: 3.6' x 0.8'
Magnitude: 14.6 mag
Constellation: Dra
Distance: 420 Mio Ly
Notes: Arp 188, the Tadpole Galaxy, is a disrupted barred spiral galaxy located 420 million light-years from Earth in the northern constellation Draco. Its eye-catching tail is about 280 thousand light-years long and features massive, bright blue star clusters. The tail is a result of a merger with a smaller galaxy that is believed to have occurred about 100 million years ago.

In the upper right corner of the image you can find a distant galaxy cluster with a redshift of z=0.251, which corresponds to a light travel time of 3 billion years.

Exposure data

Date: 2021-06-13 until 2021-07-12 (9 nights)
Location: Nussbach / Austria (400m)
Telescope: 12" Newtonian telescope (f=1120mm)
Camera: QSI 660wsg-8 with Astrodon filters
Binning: L 1x1 / RGB 1x1
Mount: ASA DDM85
Exposure time: L 90x8min / RGB 29x8min each
Exposure time total: 23h 36min