#1  
Old 19-08-2020, 12:04 PM
SB (Chris)
Registered User

SB is offline
 
Join Date: Oct 2019
Location: Lake Macquarie NSW
Posts: 29
IR Block Filter for ASI183 MC Pro

Hi Everyone,
Does anyone use an IR block filter for the ASI183 MC Pro? I have read that blocking IR reduces star bloat. Is this correct?

Am I wasting money thinking of getting this filter? The Astronomik IR Block filter appears to pass H-Alpha OK according to the spectrum plot and cut out transmission above 680nm.

Thanks.

Chris.
Reply With Quote
  #2  
Old 19-08-2020, 12:45 PM
Atmos's Avatar
Atmos (Colin)
Ultimate Noob

Atmos is online now
 
Join Date: Aug 2011
Location: Melbourne
Posts: 6,868
You'd probably be better off getting a UV/IR block than a straight IR block. With most of these OSC cameras you do need to use some kind of luminance filter (UV/IR block) unless you have a very well corrected telescope into both UV and IR. Especially with a very small pixel camera with a high QE.
Reply With Quote
  #3  
Old 08-09-2020, 11:02 AM
SB (Chris)
Registered User

SB is offline
 
Join Date: Oct 2019
Location: Lake Macquarie NSW
Posts: 29
Iím using an Esprit 100. Do any other Esprit users on this forum use IR and UV blocking or is it felt that the Esprit converges these wavelengths adequately?

Thanks

Chris
Reply With Quote
  #4  
Old 08-09-2020, 07:08 PM
LewisM's Avatar
LewisM
Novichok test rabbit

LewisM is offline
 
Join Date: Aug 2012
Location: Somewhere in the cosmos...
Posts: 9,960
All refractors irrespective of make, model or type benefit from a UV/IR block filter before the camera sensor, as do guide cameras.


I order my UV/IR block filters from SVBonyin China for about $19 each - no need for Astronomiks etc. The most I paid was $115 for a Marumi 77mm UV/IR to use on a Takahashi.
Reply With Quote
  #5  
Old 08-09-2020, 08:39 PM
PeterM
Like Solar

PeterM is offline
 
Join Date: Jun 2006
Posts: 1,783
Interesting thread thanks Chris! Got me wondering. I have a ZWO ir/uv cut filter ($39 at Bintel) that came with the 224mc I bought here. The ZWO site notes that with Solar work this filter will protect the Ha filter from ir? As there are multiple uv/ir filters in the Lunt before the camera, what advantage, if any (i.e. sharper images) is there in using the ZWO filter with a Lunt 60mm refractor and the 224MC or say
the ZWO120MM / 174MM mono camera?

Last edited by PeterM; 08-09-2020 at 09:20 PM.
Reply With Quote
Reply

Bookmarks

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 10:11 PM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Advertisement
Testar
Advertisement
Limpet Controller
Advertisement
NexDome Observatories
Advertisement
Bintel
Advertisement
Astronomy and Electronics Centre
Advertisement