COPYRIGHT, PLEASE NOTE

All the material on this website is copyrighted to J-P Metsavainio, if not otherwise stated. Any content on this website may not be reproduced without the author’s permission.

Have a visit in my portfolio

Vieraile portfoliossani

Sunday, October 21, 2018

A very rare photo, Cygnus Shell, supernova remnant G82.2 + 5.3 W63


I have planned to shoot this very difficult target for many years. At this Autumn season I had a possibility to finalized my imaging project with this, not so well known, supernova remnant W63 in Western part of the constellation Cygnus.

The final photo is a twelve panel mosaic with a total exposure time of over 100h. Image is shot with a Celestron Edge 1100 (with a 0.7 focal reducer), Apogee Alta U16 and AstroDon narrowband filters (5nm H-alpha 3nm S-II and 3nm O-III) 
Individual panels are shot between years 2015 and 2018. O-III and some missed data are shot at this ongoing  Autumn season. 

Cygnus Shell, W63
Please, click for a large photo it's worth it!

Image is in mapped colours, from the emission of ionized elements, R=Sulphur, G=Hydrogen and B=Oxygen. This mosaic image of twelve individual panels covers about four degrees of sky vertically.


Cygnus Shell in a large context
Please, click for a large photo it's worth it!

The Cygnus Shell, the supernova remnant W63, can be seen as a blueish ring  at upper center.
An older 18-panel mosaic od Cygnus Nebula Complex back from 2012. Total exposure time around 150h. QHY9 astrocam, Canon AF 200mm f1.8 lens and Baader narrowband filter set.


A close up
Please, click for a large photo it's worth it!

Filaments of an ionized hydrogen, sulfur and oxygen


Animated image
Please, click for a large photo


This animation shows the shell of an ionized oxygen without H-a and S-II channels.



Info
Please, click for a large text




Couple of calibrated and stretched 20 min exposures of O-III light


This is a really dim target...


Tuesday, October 9, 2018

Astro Anarchy get published, a new exhibition in Oulu, Finland




A new exhibition in Oulu, Finland! Lots of my new photos as a large size Diasec prints.




More Info, please have a look, ( Finnish )




Wednesday, October 3, 2018

First light for the Autumn season 2018, Filaments of the Western Cygnus



After a long mandatory Summer pause, due to high latitude, I managed to have my first light for this season! My first target locates in Western part of the Cygnus nebula complex. This area is not commonly imaged due to close proximity of more famous and brighter target in Cygnus.

As usually, this single image is a start of the longer imaging projet. My purpose is to make a four panel mosaic out of this area.


Filaments of the Western Cygnus
Please, click for a large image

Image is in mapped colours, from the emission of ionized elements, R=Sulphur, G=Hydrogen and B=Oxygen. The photo width is about one degree of sky. (The full Moon covers about 0,5 degrees of sky.)


Photo in visual palette
Please, click for a large image

Image is in Natural color palette from the emission of ionized elements, R=Hydrogen + Sulphur, G=Oxygen and B=Oxygen + 10% Hydrogen to compensate the missing H-beta emission.


Orientation in Cygnus

The area of interest is marked as a white rectangle 


Technical details

Processing work flow

Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack2.
Deconvolution with a CCDStack2 Positive Constraint, 33 iterations, added at 50% weight
Color combine in PS CS3
Levels and curves in PS CS3.

Imaging optics
Celestron Edge HD 1100 @ f10 with 0,7 focal reducer for Edge HD 1100 telescope

Mount
10-micron 1000

Cameras and filters
Imaging camera Apogee Alta U16 and Apogee seven slot filter wheel
Guider camera, Lodestar x 2 and SXV-AOL

Astrodon filters,
5nm H-alpha 3nm S-II and 3nm O-III

Exposure times

H-alpha, 12 x 1200 s, binned 2x2 = 4 h
O-III, 9 x 1200 s, binned 4x4 = 3 h.
S-II, 9 x 1200 s. binned 4x4 = 3 h
Total 10 h.