Re: [APML] New Images Posted

["Robert Gendler" <robgendler@worldnet.att.net>]

Jon,
More excellent shots. You've got me interested in the TMB refractor line.
The M7 shot is a bit bland as far as color but otherwise more excellent
work.
Rob Gendler
Email: robgendler@att.net
Web site: http://www.robgendlerastropics.com/
>
> Jon Kolb wrote:
>
> >Here's three from the previous new moon period.  All are single
> >exposures using the Pentax 67 and TMB 152 at f/7.9 on E200, pushed one
> >stop.  While 60 minutes at f/7.9 with a one stop push seems to be about
> >optimal when shooting Provia 400F from a dark site, I think I should
> >have gone longer with the E200 for the nebulosity shots, perhaps 80 or
> >90 minutes with a one stop push.  All the images are cropped slightly to
> >remove some vignetting from the FF/camera mount.  As always, comments
> >and suggestions are welcome.
> >
> >This one, I think is the best of the lot.  I was happy that I could get
> >some distinction between the stars in the cluster apart from the dense
> >cloud in the background.  Registar counts 144,848 stars in this one!
> >http://home.datawest.net/jkolb/m7_tmb.htm
> >
> >This is the best I've done on this subject, and I like the way E200
> >recorded the different shades of red in the bright central region of the
> >nebula.
> >http://home.datawest.net/jkolb/m17_tmb.htm
> >
> >I'm still tinkering some with this one.  The original slide shows the
> >"pillars of creation" area" very distinctly, but when it's brightened up
> >to show the fainter nebulosity, everything is all washed out in the
> >core.  I tried a mask of the central area, but I haven't been able to
> >blend it in very well as of yet.  I'm thinking that a longer exposure,
> >stacking, and the mask technique are probably needed here.  As it
> >stands, I think the shot looks a little too stretched.
> >http://home.datawest.net/jkolb/m16.htm
> >
> >These images mark the one-year anniversary of shooting the TMB 152, and
> >I must say that the scope's resolution, constrast, and tight stars are
> >still better than what I can do with the processing part of the job.
> >That's a good sign, I think, for a lot of future enjoyment with this
> >instrument.
> >
> >Sincerely,
> >Jon Kolb
> >Adventures in Astrophotography
> >http://home.datawest.net/jkolb/
> >jkolb@datawest.net
> >
> >
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> >
> >
>
>
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