Joining my talk on photon transfer from the WSP ( http://www.narrowbandimaging.com/ptc_method_wsp2009_page.htm ) is a short examination of what happens...
Do you have the ability to overscan the horizontal register to measure the offset accurately? Â the results from the PTC effort will be flawed unless the...
Normally, this would be of no value as Richard points out. That said, a few years ago I was forced to do exactly this with an OIII filter from Astronomik that...
Yes, I can select an option to show the overscan area in my Maxim plugin. J-P ... measure the offset accurately? ... accurately measured ... you ... Non- ... ...
Hi, Great images! Dim targets, yup. There was lots of data in both, O-III and S-II. I used a special tecnique to dig out all of it. Specially O-III has very...
Hi, Have a look: http://astroanarchy.blogspot.com/2009/03/california-nebula-ngc1499.html Btw. I think, that there might be a Planetary nebula in NGC1499? Has...
Hi Bob, Here goes my list. Many Sharpless catalog objects included. http://astroanarchy.blogspot.com/search/label/nebula Note, doe the Blog format, many...
Hi, yesterday I got a few images from the Esquimo nebula and used all my filters eg. LRGB, H-Alpha, OIII and SII Plase give me some tips how to use the...
Rainer  here is the draft article submission for the definitive article on tricolor emission line imaging published in S&T in Aug of 2005. This is the first...
M17 is often passed over in favor of M16 and other of the spashy nebulae in Sag But in tricolor emission line palettes such as the wavelength ordered palette...
Just to reiterate what richard was saying, I worked out (by google-ing) the ionisation energy for OIII, that is, doubly ionised O2+  The first ionisation...
Your welcome Darren.  I had wanted to know for a while how much energy it took to doubly ionise oxygen.  Now we all know.  Science and narrowband...
there's a reason that the emission line filters are also called Nebular Diagnostic Filters... ... From: Paul Kent To: narrowbandimaging@yahoogroups.com Sent:...
that was fun Paul. Look at the energy for Helium II it is found only in the hottest regions like surrounding the Wolf Rayet types etc... ... From: Paul Kent ...
Hi, When three color NB image is build, the balance between different bands is determinated usually by wanted visual result. Visually pleasing image, with...
The ionisation energy for HeII..ie un-ionised, or, the state in which all the electrons that belong to that element are bound to that element. :-) anyway. the...
you may be interested in a paper "beauty and astrophysics" by Michael Bessell (I think that is the author's name and I think that is the name of the paper. It...
you may be interested in a paper "beauty and astrophysics" by Michael Bessell (I think that is the author's name and I think that is the name of the paper. ...
this is the first page of the paper http://www.atnf.csiro.au/pasa/17_2/bessell/paper/ and a few comments about processing: note the comment about monotonic,...
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