Re: [APML] OT; NGC6946 and SN2004et

[Chris Schur <comets133@yahoo.com>]

Richard, that object is a good target for both film
and CCD, thanks for bringing it to our attention!

Chris Schur

--- Richard Crisp <rdcrisp@earthlink.net> wrote:

> We are now in our standard summertime weather
> pattern in the SF Bay area: we get the low "marine
> layer" clouds nearly every night. 
> 
> It is great for imaging from mountain tops because
> it does a great job of blocking the lights from the
> cities, but it stinks if you like to image from the
> backyard as do I, because my home is only at 400
> feet elevation and usually you need to be about 2500
> feet or higher to get over the clouds.
> 
> So Saturday I schlepped my gear up to Fremont Peak
> (~3000 feet) to do some imaging. My plan was
> shooting nebulae down in the lower southern part of
> the sky but the marine layer was up a bit high to
> make me feel comfortable choosing such low targets.
> About two hours after sunset it did finally settle
> down below the horizon but by that time I had
> decided to pursue another part of the sky that was
> less likely to be threatened by the clouds.
> 
> I ended up on NGC6946, a nice face on grand design
> spiral galaxy. Keeping things simple I shot straight
> up RGB without any luminance. I just took 6 x 10
> minutes through each of my three filters and then
> moved on to another target before sunrise and flat
> taking time.
> 
> I didn't realize that I had the remnants of SN2004et
> in the  FOV  until one of our local astronomers
> called it to my attention.
> 
> So I sort of got a twofer. SN2004et was discovered
> about nine months ago so it is not as bright as it
> was when discovered.
> 
> Here are the images 
> 
> NGC6946 from AP180EDT f/9 and IMG6303E
>
http://www.narrowbandimaging.com/ngc6946_rgb_180_6303_page.htm
> 
> SN2004et with additional links to prediscovery image
> and image from three days after discovery and this
> work, which is nine  months post discovery
> 
> http://www.narrowbandimaging.com/sn2004et_page.htm
> 
> I'd like to post this to the ccd list but the
> moderator has banned me for violating unwritten
> rules. I am still trying to figure out how a guy can
> violate a rule that isn't written down. Maybe
> someone can tell me how that works?
> 
> > _______________________________________________
> Astro-Photo mailing list
> Astro-Photo@seds.org
> http://seds.org/mailman/listinfo/astro-photo
> 



		
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