[AZ-Observing] Re: IC 405 410 Wide Field
- From: Albert Barr <ajbarr@xxxxxx>
- To: az-observing@xxxxxxxxxxxxx
- Date: Sun, 08 Dec 2013 10:32:29 -0700
Thanks Steve. I actually did a little research on Max Wolf and couldn't find
out anything about the film speed he used. He did do time exposures to show
that asteroids, as opposed to stars, were moving faster and showed up as short
lines instead of dots.
Also, my image was done with a hydrogen alpha filter so the Phoenix light dome
doesn't have that great of an effect.
On Dec 8, 2013, at 3:04 AM, stevecoe@xxxxxxxxxxxxxxxx wrote:
> Albert;
>
> I am fascinated at the amount of detail that a modern camera can
> capture with 4 inches of aperture. And...from within the light dome of
> Phoenix. I would be interested in the length of the exposure time that
> Max Wolf had to use 100 years ago to discover all this nebulosity. What
> would the ASA speed be for the film he was using?
>
> Great shot;
> Steve Coe
>
>
> On 07.12.2013 12:13, Albert Barr wrote:
>> I started this image the other night from my home in Phoenix. This
>> was imaged with my FLI 16000M, a new camera, and an FSQ 106 with
>> reducer. The field of view is pretty amazing. I also was able to
>> include NGC 1931, The Spider and the Fly, and M38 and M38. Eventually
>> when I get enough data I will process this in Hubble.
>> Thanks for looking and here's a link
>>
>> Albert
>>
>> http://www.flickr.com/photos/49526053@N04/11256204344/
>>
>>
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