IDAS Light Pollution Suppression (LPS) Filter - 2"
Now IDAS has tweaked the LPS-P2 to more optimize for one-shot color and modified DSLRs cameras. Please see the response curve in the images above.
The key concept on the LPS-D1 is to reduce the reddish background cast like HEUIB-II while blocking light pollution as much as it can. Although LPS-P2 is effectively blocking light pollution while retaining good color balance comparing with other brand filters, it was not as good as HEUIB-II at shown at following my test when color camera was used.
The LPS-D1 is the answer.
As the response curve indicates, LPS-D1 loses SII emission line while LPS-P2 didn’t. So this is why it's basically intended to be used with one-shot color cameras.
Manufacturer Product Number: LPS-D1-48
- Additional Information
SKU HU-LPS-D1-48 Manufacturer IDAS Type of Filter Light Pollution Reduction Filter Usage Imaging, Visual Single or Set? Single Filter Filter Size 2" Filter Shape Round Filter Mounted? Mounted Warranty 1 Year Warranty
Customer Reviews 1 item(s)
- Get rid of that Light Pollution while imaging
The IDAS-LPS filter is one of only a handful of broadband light pollution filters designed for imaging rather than for visual use. The destinction is important: visual filters concentrate on passing primarily green light centered around 480-510 nm - where the human eye sees best in low light conditions - while throwing away a lot of red and blue light. The IDAS-LPS filter cuts out only specific problem wavelengths that allow your camera to record accurate color while improving your Signal to Noise ratio by up to 3x by darkening the background skyglow significantly. Good for all camera types under all light pollution levels (the filter is designed with magnitude 4-5 skies in mind. The 2 filter is better with DSLR and 35mm cameras than the 1.25 due to vignetting issues.
1= Houston, We Have a Problem & 5= It's Out of This World
- Included Items
- Hutech IDAS Light Pollution Suppression (LPS) Filter - 2"
- Questions & Answers
Product QuestionsHello. Could I combine the (Celestron 8" Edge HD without adapter plate and visual back) + (Celestron 0.7X focal reducer) + (OS-A2T 2" to T thread adapter with IDAS LPS-D1 2" Filter Round Mounted) + (QHY8L camera)?Question by: Marcelo Ribeiro on Oct 29, 2015 12:17:00 PMQuestion by: Amit on Mar 16, 2016 12:47:00 PMIs this filter compatible with Celestron 8" Edge HD, Celestron .7X Focal Reducer and my QHY8L camera?Question by: Marcelo Ribeiro on Oct 28, 2015 7:51:00 PMThis filter can be used, but you will need a filter drawer system with a 2" drawer placed between the reducer and T adapter and the QHY8L. You will also need spacers to connect to and from the filter drawer housing to get the spacing to the CCD correct. Please contact us at either email@example.com or firstname.lastname@example.org and we will work out the adapters for you.Answer by: Chris Hendren (Admin) on Oct 29, 2015 12:22:00 PMI have a Celestron 8se. Can I screw this filter on the rear cell and screw on my t-adapter to the filter?Question by: Jason on Mar 1, 2016 10:37:00 AMUnfortunately, no. You will need the version of the same filter that also comes with the SCT adapter, here: https://www.optcorp.com/idas-light-pollution-suppression-lps-filter-w-sct-adapter-2-round-mounted.html. The filter is identical in both cases, but fits inside a two part SCT adapter with the HU-LPS-D1-48SCT.Answer by: Chris Hendren on Mar 3, 2016 6:07:00 PMHow well does this filter work with monochrome CCD cameras, such as the Atik 428EX? I can't seem to find the P2 version anywhere.Question by: James Schrader on Feb 4, 2016 8:14:00 AMThis filter works very well with a monochrome camera, although you do lose some sensitivity with your light pollution (exposure needs to be increased approximately 40% in luminance). Here is an image shot with an Apogee U16000 through the IDAS LPS P2 filter under mag 5.9 skies: http://www.hendrenimaging.com/M45_U16000_-25C_800min_L2_med.jpg.Answer by: Chris Hendren (Admin) on Feb 8, 2016 5:56:00 PMWill this filter screw onto a DSLR lens as long as the lens (or adapter) is 48mm? Or is it a different thread type?Question by: Scott B on Aug 12, 2016 11:37:00 AMYes, If your lens has a 48mm filter thread then you will be able to attach this filter without any adaptation.
I do not recommend using this filter with a step-down ring since this will stop down the lens and ultimately reduce your light gathering efficiency.
We do sell this filter in various sizes for DSLR lenses. Please give us a call at 1.800.483.6287 or email us at email@example.com so we can help you find the right sized filters that you need.Answer by: Jonathan Cheek (Admin) on Aug 15, 2016 10:54:00 AMIs it possible to put it in a 2" eyepiece filter thread too?
How is it in visual? Does it reduce light pollution and increase contrast for visual too?
Question by: ALberto on Feb 9, 2016 5:21:00 AMThe 2" round mounted version of this filter will thread into 2" eyepieces or diagonals and can be used visually. The filter works well at suppressing light pollution and is generally stronger than a broadband filter while weaker than a UHC or OIII filter.Answer by: Chris Hendren (Admin) on Feb 9, 2016 5:50:00 PMQuestion by: Amit on Mar 26, 2016 2:37:00 PMOn most brands of 2" flattener, yes. Almost all 2" flatteners have standard 2" filter threads on the inside of the barrel on the scope side, and this filter should thread right on. The only ones that will not work are some of the flatteners that thread to a part of the focuser rather than just sliding in like a diagonal nosepiece.Answer by: Chris Hendren (Admin) on Mar 28, 2016 10:39:00 AMQuestion by: Marcelo Ribeiro on Oct 28, 2015 7:55:00 PMYes. The Hyperstar adapter for your QHY8L camera includes an internal female M48 thread that will allow you to add a 2" mounted light pollution or narrowband filter. You have to separate the adapter from the Hyperstar to access this thread, and then you can leave the filter attached inside the adapter.Answer by: Chris Hendren (Admin) on Oct 29, 2015 11:03:00 AM
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