IC 1805 - 20.8.2014 at 00.45 - 20.8.2014 at 01.25 Tampere Observation number 29277

Visibility III / V

Jouni Raunio, Tampereen Ursa

I managed to take a few test shots with the refurbished imaging equipment. Unfortunately, the wind and clouds were quite a nuisance and then forced me to quit after a few squares. Maybe you should have just watched repos and lightning or the Moon ;-) Next time, maybe more exposure time or even color pictures. Figures 1 and 2 .

This description has been automatically translated from Finnish. Click here to see the original text.

3 3

Additional information

Observation target
- Deep space object
Designation
- IC 1805
- Keskitaso
Constellation
- Cassiopeia
Field of view
2 degrees

Weather
- Itäisellä taivaalla nouseva Kuu. Lisääntyvää pilvisyyttä koko ajan. Koillisessa revontulia. Lännessä ja pohjoisessa salamointia. Puuskainen tuuli haittasi selvästi. Lämpötila n. +13C.
Darkness
- Average
Seeing
- Average
Nebulae
- Emission nebula
  
  In an emission nebula the hot stars nearby cause the gas glow. This should not mix with reflection nebula, where the gas is only lit up by nearby stars.
  
  The appearance of a gas nebula is irregular, and the fainter parts of it need bigger instruments to be visible.
  
  Emssion nebulae in Cepheus. The bigger part is composed of the nebulae Cederblad 214 (Ced214) and NGC 7822. The lower round nebula is called Sharpless 170 (Sh2-170). Image J-P Metsävainio.
  
  The Orion nebula. Image Samuli Vuorinen.
  
  In this 4-degree-field there are emission nebulae Sh2-157, Sh2-158, Sh2-159, Sh2-161 and Sh2-162 (or NGC 7635 aka Bubble Nebula) and open clusters M52 and NGC 7510. Image Juha Kepsu.
  
  NGC 281 aka Pacman Nebula. The object is in Cassiopeia. Image J-P Metsävainio.
  
  NGC 896 in Cassiopeia is the tip of Heart Nebula (IC 1805). Image Timo Inkinen.

Technical information

Takahashi FSQ-106ED + Reducer QE 0.73x (f / 3.6) @ Skywatcher EQ6Pro SynScan + EQDIR. Starlight Xpress Trius SX-694 (setpoint -20C). Astrodon 1.25 "Ha 3nm @ SX USB filter wheel 7x1.25". SX OAG + SX Lodestar autoguider. Focusing USB_Focus. Integration time total 30min (H-alpha 6 * 5min 1x1bin). Description, pulseguiding and dithering MaxIm DL Pro + EQMOD. Image processing PixInsight (Calibration: 51 * bias, no dark, 31 * flat). Image scale 2.45 arcsecs / pixel (original FoV 90 x 112 arcmin).

Comments: 2 pcs

Mauri Korpi - 20.8.2014 at 10.21

Tuosta ei olisi tarvinnut paljon kääntää, kun olisi saanut komeetankin kuvaan.

Jouni Raunio - 20.8.2014 at 10.37

Se oli tosiaan lähellä mutta jäi valitettavasti kuvaamatta kun testasin ensivaloa putken kanssa.

Send a comment

Comments are checked and moderated before publication If you want to contact the observer directly about possibilities to use these images, use the Media -form.

Newest observations

Contact information

IC 1805 - 20.8.2014 at 00.45 - 20.8.2014 at 01.25 Tampere Observation number 29277