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See this discussion on how to use a filter drawer on 2″ systems: link.This filter is preferred in filter wheels because it doesn’t change the height of the filter. ZWO: 2”-1.25” Filter Adapter Ring: link.If your system takes 2″ filters, you will need a 2″ to 1.25″ thread adapter. How to use a 1.25″ Star Analyser on a system that uses 2″ filters The Star Analyser grating mounts on FITS CCD cameras and astronomical video cameras like the one above. A good rule of thumb is that the grating should be between about 30 and 80 mm from your sensor. With almost all telescopes and cameras, the Star Analyser works “right out of the box” to produce great spectra in RSpec. You can also use our grating on a DSLR mounted on your telescope. You can get amazing results mounting your grating on the nosepiece or filter wheel of your current FITS CCD or astronomical video camera. Use a Star Analyser like any 1.25″ filter cell on your astronomical CCD camera watch the spectral evolution of a nova as it goes through its different phases.Ĭlick on this link to see some wonderful spectra taken with a Star Analyser and processed with RSpec, our real-time spectroscopy software.measure the blue shift of a supernova’s expanding shell as it races towards us at millions of miles/hour.detect the red-shift of a distant quasar!.identify the composition of a star or nebula from its emission and absorption lines.determine any star’s OBAFGKM star type and temperature from its spectra curve.Notice that the red curve has dips exactly where the blue lines predict: The blue calibration lines show where we’d expect to see dips due to the star’s Hydrogen absorbing light. The red line is an intensity graph of the star’s spectrum. This spectrum was displayed in real-time with our RSpec software.
The observing location for this spectrum was just 4 miles from the center of a large metropolitan city. Your FITS or DSLR camera would, of course, be even more sensitive.
We’re happy to coach you on how to acquire these skills: contact form link.īelow is a real-time view of the spectrum of Vega made with a Star Analyser, an 8″ SCT, and just a $50 webcam. If you don’t have those skills, you will need to acquire them before successfully using a Star Analyser. And you will need to be able to point your telescope at those stars and capture images that are properly exposed, well-focused, and not smeared by star-movement through the sky. This means you will need to locate specific stars in the sky. Note: To use a Star Analyser grating, you need to capture images of deep space objects. We have gratings in stock and we can ship you one today - see our online store: link. We have customers using these gratings on webcams, DSLRs, modern video astronomy cameras, and of course FITS images from cooled or uncooled astronomical CCDs. to capture and understand the spectra of stars! With our gratings and software, it’s amazingly easy. The grating is durably mounted in a standard 1.25″ filter cell and is protected on both sides with anti-reflection coated glass. The $195 Star Analyser 100 is a diffraction grating with grooves that are spaced at 100 lines/mm. The video below shows some exciting examples of what you can do with a Star Analyser:Īlso, check out our samples page ( link) for some great sample work done by amateur spectroscopers. Capturing the spectrum of a star is easy! Use our grating, a DSLR or small telescope, and our award-winning software. It can be mounted on your telescope just like any other 1.25″ filter. It’s is easy to use and works with most cameras. Our Star Analyser 100 (SA-100) grating is designed specifically for amateur astronomical spectroscopy. The Star Analyser 100 grating screws onto your camera nose or filter wheel
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