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Durable, easy-to-install silicone rubber colorizing filters for clear/white miniature incandescent lamps. Reusable and colorfast - won't crack, chip, peel or fade - even after 10,000 hours at -160° to 575° F. Plus they cushion lamps against shock/vibration and contain broken glass in the event of bulb shattering.
Features and Benefits:
UL and CSA-recognized
Meets military specifications
Reusable and interchangeable
Unbreakable - won't chip, crack or peel
Slip-on without tools
Full range of standard and custom colors
Colorfast - won't fade and boosts lamp life
Tolerant to temperatures to 575° F
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IR Cutoff Filters and Optical Low Pass Filter for use with CMOS/CCD Sensors. These filters can be modified to meet your specifications.
Infrared (IR) cut-off filters are used with color CCD or CMOS imagers to produce true color images. An IR cut-off filter blocks the transmission of the infrared while passing the visible. This can be done with two optical techniques: absorption or reflection. Absorptive filters are made with special optical glass that absorbs near infrared radiation. Reflection type filters are essentially short-pass interference filters that reflect infrared light with high efficiency. We offer two types of absorptive filters: IRC20 and IRC21. The standard reflection type (IRC30) filter offers cut-off wavelength at 640nm (+/-10nm). Other cut-off wavelength can be selected for custom orders. IRC20 type is recommended for CCD imagers while IRC21 and IRC30 are more suited for CMOS imagers. The standard sizes are listed below. Other sizes can be custom ordered.
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Astrodon® tru-balance filters are the first filters designed to match the sensitivity of modern CCD cameras. Using filters matched with the detectors greatly simplifies all aspects of deep-sky tri-color imaging. Benefits include shorter imaging times, G2V white point balance, balanced OIII nebula color, and pre-balanced RGB channels when using Kodak Blue Plus CCDs.
They are an outgrowth of over a year and a half of research, published in Sky and Telescope and presented at AstroImage and Imaging the Sky conferences. The narrowband filters, H a, SII and OIII, allow you to image when the moon is up, thereby extending the amount of imaging time you have each month. Since they are parfocal with the LRGB filters, you can easily focus on the L or C filter and then switch to the narrowband filter WITHOUT refocusing.
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Bandpass filters are optical elements that are designed to transmit a specific spectral band with high efficiency, while reject others. The characteristics of the bandpass are controlled by multilayer dielectric coatings
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Spectrogon designs and manufactures optical interference filters employing state of the art deposition technology and the most advanced design criteria available.
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The motorized Filter Wheel 40 permits automatical changing of 4 or 6 filters. Unmounted filters ø 25 mm/1", or optics in ø 25 mm mounts can be used.
The FRM 40 filter wheel can be mounted on a SYS 40 slide. Using adapter plate ADP-S65-S40-20 it can be fitted to a SYS 65 slide.
In terms of drive, a 2-phase step motor as well as a DC servo motor version is available. As a standard, a contactless Hall-effect limit switch is integrated.
Holders are not scope of delivery.
All aluminium parts have a top quality black anodised protective coating.
- compatible with SYS 40 and with SYS 65
- deformation-resistant aluminium, black anodized
- mountable on slide
- with step motor or geared DC servo motor
- contactless, high-precision Hall-effect limit switches
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The Cairn Optospin fast stepping / spinning filter changer (a.k.a. the rotor) is designed with both photometric and imaging systems in mind. It can be configured with either three or six filter positions, allowing for simultaneous use of several dyes. Unlike previous versions of "the rotor" the Optospin accepts 25mm filters making it suitable for both excitation and emission wavelength changing. The microprocessor control unit allows the operation to be "tuned" to the application, giving fine control over the acceleration speed, degree of damping etc.
Continuous spinning mode is our recommended rotor based solution for photometric measurements, and rotor speeds from less than 2 to over 100 revolutions per second are routinely possible with this system. Each filter position can also be discontinuously selected, with switching times of 35msec between adjacent positions or 55msec between opposite wheel positions. The low end of the spinning speed range allows synchronous spin with a video camera at normal frame rates and the discontinuous stepping mode is ideally suited to wavelength selection for imaging applications.
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Apogee AI-FW50 Series Filter Wheels for Alta and Ascent Models
The AI-FW50 series of filter wheels provide large format filtering solutions for the Alta and Ascent series of imaging systems. The FW50 filter wheel currently has two interchangeable filter carousels; A large 7 position 50mm square wheel ideal for the U9000 and U16 imaging systems, and a 9 position 50mm round wheel ideal for any other Alta or Ascent system.
The filter wheel is controlled via USB 2.0. The filter wheel easily adapts to the Alta D2, D7, and D9 bodies, as well as to AP systems.
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