Swan and Eagle

[avandonk]

Details.

Canon 5DH, Canon 300mm F2.8L at f/3.5 with exterior aperture and lens hood extension. Hutech LPR filter.

Exposures dithered 20 X ( 15s, 30s, 60s and 120s ) at 1600 ISO. Stacked upsized X1.6. Usual HDR method. Fridge at -8.0C


Large Image at native pixel size 7.0 X 4.6 degrees. 5.6 MB

http://d1355990.i49.quadrahosting.com.au/2010_05/s&e_4k_10.jpg


Bert

[jjjnettie]

Nice FOV Bert.
A matching pair.

[multiweb]

Great stuff Bert! :thumbsup: That's on my todo list to add panels to my Ha swan widefield. M16 is not as far as I first thought. Cool.

[avandonk]

Yes they make an obvious nice pair jjjnettie at this FL. There are interesting objects just inside and out side the field. I can feel another mosaic coming on if the weather would let me.

Marc your Hyperstar setup has lovely resolution and speed. No setup has everything. My widefields are just signposts or real maps for others. Jason used one of my images to control his mosaic. Just let me know and I will make a very high res image available as a framework for your mosaic.
The problem is a spherical image is being projected onto a flat surface and if you try to make a mosaic distortion will rear it's ugly head. The 300mm lens is almost perfectly rectilinear so it makes a a very good basis as a frame to align your much higher resolution data without distortion.

Bert

[bmitchell82]

Bert, i was just wondering did you have a Widefield of the Triffid/lagoon neb region? if so could you point me towards it as im working in this area presently with the 10"40d.

[multiweb]

Thanks for the offer Bert. Certainly will do. After having a look at your shot again I had another look at my two panels and they just barely overlap. I've just thrown them together in registar - no blending. [See Attached]. So I know now where to shoot next.

[gregbradley]

Great shot Bert.

Photoshop CS5 has an improved HDR tool to combine various exposures automatically. It could be very handy for images of M42, Tarantula, Globula clusters etc.

It may be worth a free trial download to see if you like it with your approach.

Otherwise CS5 seems to have not too much to offer beyond CS2 for astrophotography.

Greg.

[Omaroo]

Fantastic Bert - smooth as. Very nicely done. Interesting FOV at 300mm. I'm going to try the Sky-90 with reducer (400mm @f/4.5) on these two as well - should fit beautifully. Thanks for the inspiration! :)