SOLD
Solar Spectrum H-Alpha 0.5 ang system with Baader D-ERF Energy rejection filter, mounted to fit 10"LX200. The 90mm ERF can easly be remounted to fit a different scope. The filter is designed to operate best at a focal length F/30. With the 80mm aperture mask the 10" scope is at F/30 so no telecentric lens required. Gives great high contrast views of the sun with prominences clearly visible and may be temperature tuned off band.
More info:
http://www.baader-planetarium.com/en...ha_filters.pdf
ERF is a Baader D-ERF Energy rejection filter (very expensive)
Model: Solar Observer 1, 0.5A +/- 0.05 Bandpass (#SS-SO1.5)
Solar Observer Series 1.5: Larger 25mm clear aperture enables solar full disk views with focal lengths below 2400mm (80-95mm aperture). Of course, larger telescope apertures may be used to deliver increasingly detailed views.
http://www.alpineastro.com/Solar_Obs...tm#H-Alpha_acc
Nice case, Baader SCT adaptor, and insured shipping included.
$3,500 AUD
Website description:
"Solar Spectrum produces what we have found to be the ultimate in high resolution H-Alpha filter systems. With over 20 years of experience in making filter systems for professionals as well as amateurs, Solar Spectrum brings an unmatched level of expertise to bear in producing filters at prices accessible to amateurs. This experience uniquely enables them to deliver a high level of quality and consistency in very narrow filters (< 0.3A) which are extremely demanding to produce.
These rear-mounted etalons deliver high-quality narrowband filtration that can be used with apertures from as small as 40mm up to 180mm! Unlike front objective etalons, the telescope aperture is not limited by the diameter of the etalon. Every Solar Spectrum filter can be flexibly configured to match any desired telescope and aperture desired, without any loss in resolution. Each Solar Spectrum filter system includes the rear mounted etalon assembly (which includes an integrated thermoelectric heater/cooler), programmable temperature control box with digital temperature readout, and AC power cable. The control box accepts 90-256 VAC 50/60Hz. For DC use, any inexpensive inverter can be used. A complete system consists of a Solar Spectrum Filter and Front-Mounted Energy Rejection Filter. Telescopes with focal ratios faster than f/20 will also require a telecentric lens to produce the desired f/25 - f/30 beam. Currently, Telecentric lenses are available in 2X and 4X amplifications.”
