Re: q. about using bad pixel map


Feb 9 6:24 PM

 


----------------------------

#52168 Feb 9 6:24 PM

There was a big thread about generating and using bad pixel maps in May 2012. I read the entire thread, since it offers a solution to my "star faded" problem. I payed particular attention to msg 49498 (May 23, 2012 2:07PM) from Terry Platt. After generating the dark and bad pixel map for calibration, he says to set "full calibration" for the guide camera.



Q: How does MaxIm know where to look for the dark frame and pixel map?



----------------------------

#52170 Feb 9 7:31 PM

Under your calibration groups. Click a dark group then on the right is the drop down box for which bad pixel map to use.



Dave Goodyear



Sent from my iPhone



On Feb 9, 2013, at 6:24 PM, "CurtisC" calypte@...mailto:calypte@...>> wrote:







There was a big thread about generating and using bad pixel maps in May 2012. I read the entire thread, since it offers a solution to my "star faded" problem. I payed particular attention to msg 49498 (May 23, 2012 2:07PM) from Terry Platt. After generating the dark and bad pixel map for calibration, he says to set "full calibration" for the guide camera.



Q: How does MaxIm know where to look for the dark frame and pixel map?











[Non-text portions of this message have been removed]



----------------------------

#52171 Feb 9 9:04 PM

But what links that specific dark group to the images coming from the guide camera?

--- In MaxImDL@yahoogroups.com, Dave Goodyear wrote:

>

> Under your calibration groups. Click a dark group then on the right is the drop down box for which bad pixel map to use.

>

> Dave Goodyear

>

> Sent from my iPhone

>

> On Feb 9, 2013, at 6:24 PM, "CurtisC" > wrote:

>

>

>

> There was a big thread about generating and using bad pixel maps in May 2012. I read the entire thread, since it offers a solution to my "star faded" problem. I payed particular attention to msg 49498 (May 23, 2012 2:07PM) from Terry Platt. After generating the dark and bad pixel map for calibration, he says to set "full calibration" for the guide camera.

>

> Q: How does MaxIm know where to look for the dark frame and pixel map?

>

>

>

>

>

> [Non-text portions of this message have been removed]

>



----------------------------

#52172 Feb 9 9:32 PM

Hi Curtis,

Here is how I did it:

I have the following master darks (made up of 20 subs each) visible under "set calibration":

10s .752x580 .1x1

10s .376x290 2x2

5s . 752x580 .1x1

5s .376x290 2x2



I have created bad pixel maps from each of these masters and gave them appropriate names:

752x580_1x1_10s

752x580_1x1_5s

etc

etc



(NB: When you create the bad pixel map, do not apply it to the dark - only save the map)



All you now have to do in the "set calibration" form is to select each of the darks and associate the applicable dark from the "Bad Pixel Map' combo box. .That is all there is to it. If you set full calibration, Maxim will find the appropriate dark and its bad pixel map and apply it to the guider image.



Dale





---------------

From: CurtisC calypte@...>

To: MaxImDL@yahoogroups.com

Sent: Sunday, February 10, 2013 7:04 AM

Subject: [MaxImDL] Re: q. about using bad pixel map





.

But what links that specific dark group to the images coming from the guide camera?

--- In MaxImDL@yahoogroups.com, Dave Goodyear wrote:

>

> Under your calibration groups. Click a dark group then on the right is the drop down box for which bad pixel map to use.

>

> Dave Goodyear

>

> Sent from my iPhone

>

> On Feb 9, 2013, at 6:24 PM, "CurtisC" > wrote:

>

>

>

> There was a big thread about generating and using bad pixel maps in May 2012. I read the entire thread, since it offers a solution to my "star faded" problem. I payed particular attention to msg 49498 (May 23, 2012 2:07PM) from Terry Platt. After generating the dark and bad pixel map for calibration, he says to set "full calibration" for the guide camera.

>

> Q: How does MaxIm know where to look for the dark frame and pixel map?

>

>

>

>

>

> [Non-text portions of this message have been removed]

>









[Non-text portions of this message have been removed]



----------------------------

#52173 Feb 9 9:36 PM

OK, I think I almost have it. If I select "Camera 2" (my guide camera) on the "Expose" tab, then I can go into "Set Calibration" to select the dark group and pixel map I want -- right? Now, all I need is a clear sky to try it out. Maybe tomorrow night.

--- In MaxImDL@yahoogroups.com, Dave Goodyear wrote:

>

> Under your calibration groups. Click a dark group then on the right is the drop down box for which bad pixel map to use.

>

> Dave Goodyear

>

> Sent from my iPhone

>

> On Feb 9, 2013, at 6:24 PM, "CurtisC" > wrote:

>

>

>

> There was a big thread about generating and using bad pixel maps in May 2012. I read the entire thread, since it offers a solution to my "star faded" problem. I payed particular attention to msg 49498 (May 23, 2012 2:07PM) from Terry Platt. After generating the dark and bad pixel map for calibration, he says to set "full calibration" for the guide camera.

>

> Q: How does MaxIm know where to look for the dark frame and pixel map?

>

>

>

>

>

> [Non-text portions of this message have been removed]

>







----------------------------

#52174 Feb 9 9:41 PM

Thank you. I was hoping you'd chime in. Your procedure is (it appears to me) a bit different from Terry Platt's, but insight into your procedure is helpful.

--- In MaxImDL@yahoogroups.com, Dale Liebenberg wrote:

>

> Hi Curtis,

> Here is how I did it:

> I have the following master darks (made up of 20 subs each) visible under "set calibration":

> 10s ..752x580 ..1x1

> 10s ..376x290 2x2

> 5s .. 752x580 ..1x1

> 5s ..376x290 2x2

>

> I have created bad pixel maps from each of these masters and gave them appropriate names:

> 752x580_1x1_10s

> 752x580_1x1_5s

> etc

> etc

>

> (NB: When you create the bad pixel map, do not apply it to the dark - only save the map)

>

> All you now have to do in the "set calibration" form is to select each of the darks and associate the applicable dark from the "Bad Pixel Map' combo box. ..That is all there is to it. If you set full calibration, Maxim will find the appropriate dark and its bad pixel map and apply it to the guider image.

>

> Dale

>

>

---------------

> From: CurtisC

> To: MaxImDL@yahoogroups.com

> Sent: Sunday, February 10, 2013 7:04 AM

> Subject: [MaxImDL] Re: q. about using bad pixel map

>

>

> ..

> But what links that specific dark group to the images coming from the guide camera?

>

> --- In MaxImDL@yahoogroups.com, Dave Goodyear wrote:

> >

> > Under your calibration groups. Click a dark group then on the right is the drop down box for which bad pixel map to use.

> >

> > Dave Goodyear

> >

> > Sent from my iPhone

> >

> > On Feb 9, 2013, at 6:24 PM, "CurtisC" > wrote:

> >

> >

> >

> > There was a big thread about generating and using bad pixel maps in May 2012. I read the entire thread, since it offers a solution to my "star faded" problem. I payed particular attention to msg 49498 (May 23, 2012 2:07PM) from Terry Platt. After generating the dark and bad pixel map for calibration, he says to set "full calibration" for the guide camera.

> >

> > Q: How does MaxIm know where to look for the dark frame and pixel map?

> >

> >

> >

> >

> >

> > [Non-text portions of this message have been removed]

> >

>

>

>

>

> [Non-text portions of this message have been removed]

>



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