Astronomik ProPlanet 642 IR Pass Filter - 1.25" Round Mounted
Astronomik ProPlanet 642 IR-Pass Filter - 1.25"
The ProPlanet 642 BP is the most recent addition to Astronomik's ProPlanet IR-pass filter family. This filter offers a wide assortment of applications for daytime IR photography, high resolution imaging of the Moon and planets, and capturing gorgeous deep sky images of objects in H-alpha regions when used for astro-imaging.
This filter provides a 200 nm spectral window from 642 nm to 842 nm. Unlike Astronomik's other two ProPlanet filters, the P642-1 blocks the longer infrared. Along with the ProPlanet 742 and 807 filters, Astronomik now gives you three choices for your IR-imaging needs. The ProPlanet 642 will frequently be the correct choice for optimal imaging.
Please note, image depicts the 742 filter, not the 642.
Daylight IR-Imaging:
- High contrast images with excellent color rendition
- Clear images with "wood effect"
- No hot spot from longer IR
- Short exposure times, nearly identical to regular VIS-imaging
- Ideally suited for infrared videos
High Resolution Lunar & Planetary Imaging:
- Short exposure times
- Efficient seeing reduction
- Improved contrast
- Blocking the longer IR eliminates ghosting and enables maximum sharpness
Deep-Sky Astrophotography of H-Alpha Regions:
- Best H-alpha line transmission at 656 nm
- Approximately 40 nm FWHM with astro-modified DSLR cameras
- Incredible contrast in moonlight or light polluted conditions
- Reasonably priced filter for amateur H-alpha imagers
- Camera display plus LiveView provides simple focusing
Technical Specifications
- Over 96% transmission for wavelengths in the 642 nm to 842 nm range
- Blocks wavelengths between 350 nm and 630 nm
- Parfocal with all other filters from Astronomik
- 1 mm glass thickness
- Offers total resistance to scratching as well as the effects of aging and high humidity
- Diffraction limited, this filter will not compromise the optical efficiency of your telescope
- Astronomik filters arrive in a durable plastic filter container of superior quality
Image depicts the Astronomik 1.25" ProPlanet 742 IR-Pass Filter. This item number is for the 1.25" ProPlanet 642 IR-Pass Filter.