Nebulas galore

The first picture is LDN1235, a dark molecular cloud in the constellation of Cepheus. Also visible are the bright blue reflection nebulae VdB149&150.
The second picture is a bi-color narrowband image in Ha and O3 of the hydrogen rich area in Cygnus. Top right is NGC6888 or Crescent nebula at a distance of 5000ly. Middle left is the very faint PN G75.5+1.7 or Soap Bubble nebula, discovered only very recently by an amateur astronomer in 2008 (not me  )

LDN1235

Telescope: 16″ f3.75 Dream Scope
Camera: FLI ML16803
Mount: ASA DDM85
Exposure: 148x5min LRGB
Date: June – July 2017
Location: Southern Alps, France

NGC6888 and PN G75.5+1.7

Telescope: 16″ f3.75 Dream Scope
Camera: FLI ML16803
Mount: ASA DDM85
Exposure: 126x5min Ha(R) + O3(B) + synth G
Date: June – July 2017
Location: Southern Alps, France

 

 

IC1396 in Hubble Palette

Having an observatory in a remote area with no light pollution doesn’t mean it’s dark all the time. The light of the moon can spoil the view. So that’s why sometimes I switch to narrow band imaging , using filters that block a large part of the spectrum. With S2, Ha and O3 filters I created a false color image according the so-called ‘Hubble Palette’. The object on this picture is IC1396 in the constellation of Cepheus at 2400 light years away.

The Elephant’s Trunk in IC1396

Telescope: 16″ f3.75 Dream Scope
Camera: FLI ML16803
Mount: ASA DDM85
Exposure: 192x5min SII(R) + Ha(G) + OIII(B)
Date: June 2017
Location: Southern Alps, France

 

Arp188 or the Tadpole Galaxy

The Tadpole Galaxy is a disrupted barred spiral galaxy located 420 million light-years from Earth toward the northern constellation Draco. Its most dramatic feature is a massive trail of stars about 280,000 light-years long; the size of the galaxy has been attributed to a Galaxy merger with a smaller galaxy which is believed to have occurred about 100 million years ago. Because of its great distance from Earth, the apparent size is only 3.6 x 0.8 arcmins.
Click on the picture and see if you can spot the Tadpole galaxy in the wide-field view.

Arp188 or the Tadpole Galaxy

Telescope: 16″ f3.75 Dream Scope
Camera: FLI ML16803
Mount: ASA DDM85
Exposure: 65x5min L + 29x5min each for RGB
Date: May 2017
Location: Southern Alps, France

Data acquisition: Karel Teuwen and Bart Delsaert
Processing: Bart Delsaert

vdB 152

van den Berg (vdB) 152 is an elongated molecular cloud 1,400 light years distant in the constellation of Cepheus. It is sufficiently dense in localized areas to block all light from stars from reaching us. In other areas, some stars shine through. Its reddish color is largely due to light scattering off dust particles within the cloud. This preferentially scatters light of shorter wavelengths and lets redder light through. The tip of the cloud near the center of the image is reflecting blue light from a nearly embedded star.

vdB 152

Telescope: 16″ f3.75 Dream Scope
Camera: FLI ML16803
Mount: ASA DDM85
Exposure: 56x5min L + 18x5min each for RGB
Date: April – May 2017
Location: Southern Alps, France

 

NGC5371 and Hickson 68

Compact Galaxy Groups have always been of interest to astronomers ever since Stephan discoverd his famous Stephan’s Quintet in 1877. The Hickson Compact Galaxy Groups were compiled by Paul Hickson and published in his Atlas of Compact Groups of Galaxies in 1994. There are exactly 100 entries. NGC 5371 is a face-on spiral galaxy in the constellation Canes Venatici. NGC 5371 (which also seems to be known as NGC 5390) is a symmetrical face-on Sbc barred spiral galaxy at a distance of 100 million light years. This galaxy with Hickson Galaxy Group 68 makes up the Big Lick Galaxy Group.

NGC5371 (left) and Hickson 68 (right)

Telescope: 16″ f3.75 Dream Scope
Camera: FLI ML16803
Mount: ASA DDM85
Exposure: 58x5min L + 17x5min each for RGB
Date: April – May 2017
Location: Southern Alps, France