Hot Filter Thickness on K10D?

**smigol** · 04-21-2010, 08:58 AM

Does anyone know the thickness of the hotfilter (IR/UV) on the K10D CCD?

I'm curious because I'm considering getting a second body and then supplying my own filter material to an IR conversion shop. That way I can ensure that I'm getting the critical colors I'm seeking.

Since I do astrophotography, I'm wanting to get the 656nm H-alpha line and desire a cutoff at 420nm to prevent violet halos. I'm considering the Baader filter as my material and they provide it in a slab that's 3mm thick.

I'm not sure if this is the correct thickness for the Pentax camera.

Does anyone know?

JeffJS · 04-21-2010, 09:08 AM

There is a K10d Service manual here that may help you.. Perhaps in the parts list (if there is one).. I can't really help you beyond that but I'm anxiously awaiting your photos to see the result.

Downloads

**smigol** · 04-21-2010, 09:32 AM

I looked over the service manual and it didn't have dimensions on the filter. I'm working finding more information at the moment, hopefully I'll have something new to report soon.

jjdgti · 04-22-2010, 11:43 AM

Originally posted by JeffJS

There is a K10d Service manual here that may help you.. Perhaps in the parts list (if there is one).. I can't really help you beyond that but I'm anxiously awaiting your photos to see the result.

Downloads

Jeff: very interesting link. I am sure not that many people are able to disassemble a K10D and have it put together correctly.

JeffJS · 04-22-2010, 06:09 PM

Originally posted by jjdgti

Jeff: very interesting link. I am sure not that many people are able to disassemble a K10D and have it put together correctly.

I'm certain I could Do it, but that doesn't make it a good idea. I was just hoping it would have helped the OP, I would love to see some Astro photos from a modded K10d, at which point I might try it myself.

**smigol** · 04-23-2010, 03:39 PM

I've sent an email to Spencer's camera to see if they could get back with me on the dimensions of the filter. No luck yet. I'll give them a phone call next week.

I'll probably do this project later in the year in August, since I'll be shooting a wedding for a friend and the extra body will come in handy. Once that is done, I'll send that extra body off for the change.

04-21-2010, 08:58 AM	#1
smigol Site Supporter Join Date: Sep 2008 Location: Menlo Park, CA Photos: Albums Posts: 422	Hot Filter Thickness on K10D? Does anyone know the thickness of the hotfilter (IR/UV) on the K10D CCD? I'm curious because I'm considering getting a second body and then supplying my own filter material to an IR conversion shop. That way I can ensure that I'm getting the critical colors I'm seeking. Since I do astrophotography, I'm wanting to get the 656nm H-alpha line and desire a cutoff at 420nm to prevent violet halos. I'm considering the Baader filter as my material and they provide it in a slab that's 3mm thick. I'm not sure if this is the correct thickness for the Pentax camera. Does anyone know?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Focus Screen thickness ??	gregmoll	Pentax DSLR Discussion	11	07-14-2009 09:56 AM
Hot pixels and the 2 second timer on K10D.	Damn Brit	Pentax DSLR Discussion	4	08-30-2008 12:13 AM
Size of k100D Hot Filter?	Avantphoto	Pentax DSLR Discussion	2	07-21-2008 01:56 PM
K10D Hot Shoe Problem	izzyinstl	Pentax DSLR Discussion	5	02-03-2008 09:41 AM
black sweater looks purple.....Hot Mirror Filter???	INcreative	Pentax DSLR Discussion	10	05-11-2007 11:34 AM

04-21-2010, 09:08 AM	#2
JeffJS Inactive Account Join Date: Aug 2008 Location: Michigan, USA Photos: Gallery \| Albums Posts: 7,484	There is a K10d Service manual here that may help you.. Perhaps in the parts list (if there is one).. I can't really help you beyond that but I'm anxiously awaiting your photos to see the result. Downloads

04-21-2010, 09:32 AM	#3
smigol Site Supporter Join Date: Sep 2008 Location: Menlo Park, CA Photos: Albums Posts: 422 Original Poster	I looked over the service manual and it didn't have dimensions on the filter. I'm working finding more information at the moment, hopefully I'll have something new to report soon.

04-22-2010, 11:43 AM	#4
jjdgti Veteran Member Join Date: Jun 2008 Location: NJ Posts: 1,824	Originally posted by JeffJS There is a K10d Service manual here that may help you.. Perhaps in the parts list (if there is one).. I can't really help you beyond that but I'm anxiously awaiting your photos to see the result. Downloads Jeff: very interesting link. I am sure not that many people are able to disassemble a K10D and have it put together correctly.

04-22-2010, 06:09 PM	#5
JeffJS Inactive Account Join Date: Aug 2008 Location: Michigan, USA Photos: Gallery \| Albums Posts: 7,484	Originally posted by jjdgti Jeff: very interesting link. I am sure not that many people are able to disassemble a K10D and have it put together correctly. I'm certain I could Do it, but that doesn't make it a good idea. I was just hoping it would have helped the OP, I would love to see some Astro photos from a modded K10d, at which point I might try it myself.

04-23-2010, 03:39 PM	#6
smigol Site Supporter Join Date: Sep 2008 Location: Menlo Park, CA Photos: Albums Posts: 422 Original Poster	I've sent an email to Spencer's camera to see if they could get back with me on the dimensions of the filter. No luck yet. I'll give them a phone call next week. I'll probably do this project later in the year in August, since I'll be shooting a wedding for a friend and the extra body will come in handy. Once that is done, I'll send that extra body off for the change.