Thanks Richard, but I would rephrase that as nothing wins 'people' better :) ________________________________ From: Richard Crisp <rdcrisp@...> To:...
7633
Richard Crisp
rdcrisp
Feb 1, 2011 3:58 pm
Tim I think “converts” is better because it is more precise and descriptive. “People” is implied in either case but what I am saying is that nothing...
7634
Bob Holzer
holzerinatl
Feb 1, 2011 10:10 pm
Hi All: It's taken me a long time to get fully operational here in Santa Fe. Here's my first image, in the files section: ...
7635
Richard Crisp
rdcrisp
Feb 1, 2011 10:21 pm
congratulations on getting running Bob one tip about luminance: if you use Ha in the luminance keep in mind that it attenuates reflection nebulosity:...
7636
Tim Khan
timkhan
Feb 2, 2011 2:48 am
Nice seagul, and glad to hear your up and running. You make me want to take the 16803, but I am having fun with the higher resolution 8300....
7637
Bob Holzer
holzerinatl
Feb 2, 2011 6:35 am
Ok Richard. Of course you are correct. I went back and eliminated the Ha from the lum. It provided a little more blue reflection, but nothing like Mike's APOD...
7638
Bob Holzer
holzerinatl
Feb 2, 2011 6:39 am
Thanks Tim. It's cold here in winter, I need to make it to WSP some year soon! You make me want me to get a ML8300 for the BRC-250. I need some higher rez...
7639
Wolfgang Promper
ic2779
Feb 2, 2011 9:33 am
Hello Karel I like it very much, you are doing some great imaging with your remote setup in France. I have the same problem with some of the "Standard objects"...
7640
Tim Khan
timkhan
Feb 2, 2011 2:00 pm
I most definitely like the second rendition better. Yes you like the 8300 too, the only issue is the reduced sensitivity, to bad it does not come back side...
7641
matthhww555
Feb 2, 2011 2:29 pm
Hello, I just got a new FLI PL16803 proline, and was trying out some darks last night, which look extremely strange to me. I've done a lot of reading in the...
7642
Richard Crisp
rdcrisp
Feb 2, 2011 3:22 pm
Congratulations on your recent purchase of the PL16803. You have the best camera on the planet that uses that sensor and by a significant margin.. Your dark...
7643
matthhww555
Feb 2, 2011 3:43 pm
Thanks so much for your help Richard!...
7644
Richard Crisp
rdcrisp
Feb 2, 2011 4:11 pm
You are very welcome: is that Matt? Here is a simple experiment you can perform to convince yourself of the results I said were normal. In a dark room, take...
7645
matthhww555
Feb 2, 2011 7:49 pm
Hi Richard, yes it's Matt. I'm looking forward to giving that a try. I've read a lot of what you've written about RBI, but what is the effect, chipwise, of...
7646
Richard Crisp
rdcrisp
Feb 2, 2011 8:29 pm
The purpose of the two bias frames is to be assured your pixels are completely flushed after the flooding Not sure if FLI bins during flushing to save time but...
7647
Tim Khan
timkhan
Feb 2, 2011 8:43 pm
I've asked Jim M. to see if he can incorporate n number of user selectable binning (2x2 3x3, 4x4, etc) for flushing after IR flooding to speed things up. ...
7648
mattssporre
Feb 2, 2011 9:14 pm
Dear group, I have noticed that most users of the ML8300 cool their sensor down to ca -25C (or maybe I have seen a biased sample of users?). Is there a reason...
7649
rdcrisp
Feb 2, 2011 10:10 pm
-25C is a good temperature for the KAF8300 and for the ML line of cameras. The cooling in the microline is sufficient such that you should be able to reach...
7650
Richard Crisp
rdcrisp
Feb 2, 2011 11:50 pm
five optical views of the Crab all taken from a suburban backyard http://www.narrowbandimaging.com/images/crisp_crab_5_ways_to_sunday_vga.jpg five...
7651
Matts Sporre
mattssporre
Feb 3, 2011 7:37 am
Thank you for your answers Tim and Richard. The reason for asking is that I can easily go down to -40C or even -50 on 90-95% of my imaging nights. I live in...
7652
Tim Khan
timkhan
Feb 3, 2011 1:48 pm
I'd say use the RBI flood and take advantage of the climate and go down to -45C being the case. I did not state, when we are able to image in summer, the...
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Richard Crisp
rdcrisp
Feb 3, 2011 2:51 pm
I agree with Tim: Running colder will cause no harm It will offer benefits: 1) Better noise profile from RBI trap leakage 2) Better cosmetic...
7654
Matts Sporre
mattssporre
Feb 3, 2011 3:38 pm
Yep, I will start the creation of a -45C library (RBI) tonight, unless the skies actually clears up and I can do some imaging... Already have a -25C RBI...
7655
Richard Crisp
rdcrisp
Feb 3, 2011 3:43 pm
The key reasons I use the ML8300 at -25C 1) I am lazy and only want to make one set of darks 2) The KAF8300 has reasonably good dark current...
7656
Michael Adler
michaeladler43
Feb 3, 2011 4:49 pm
Richard, I don’t understand the second point here. Why would there be an offset or pedestal in the raw flat image. Does the PL16803 add one in? Or is it the...
7657
Richard Crisp
rdcrisp
Feb 3, 2011 5:09 pm
the raw flats will have an offset added to them. that comes from the camera if you use Maxim DL for calibrations it may add a Pedestal value. that is...
7658
Michael Adler
michaeladler43
Feb 3, 2011 5:39 pm
Richard, I also do not understand the point of using two bias frames. How are they taken? Are they used inaddition to a master dark taken using 2-3 RBI...
7659
Richard Crisp
rdcrisp
Feb 3, 2011 5:46 pm
the bias frames are a zero length exposure: it just means the array is read out the act of reading out the array removes mobile charge from the pixels. ...
7660
Michael Adler
michaeladler43
Feb 4, 2011 6:45 pm
Richard, so to get this right what is the sequence of taking an image whether it is a dark,light,flat. Do I take two bias frames with RBI flood, and then take...
7661
Richard Crisp
rdcrisp
Feb 4, 2011 7:00 pm
i only suggested to shoot the biases after using a flashlight to manually flood. the rbi management in the FLI camera will do the flushing for you when you...
