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  1. From the album: Sun refractor 185 mm Halpha

    A magnificent solar flare this May 13, 2024 with my 185mm apo Askar scope with Fabry Perot PST Coronado optimized Halpha Barlow 2.5 x and Camera player one

    © andre cassese

  2. From the album: refractor 150 mm halpha observatoire Rocbaron

    At the heart of the great plasma tornado 150 mm apo halpha refractor - Double stack Fabry Perrot PST coronado optimized - Barlow 2.5 x and Apollo IMX 429 camera

    © Andre cassese

  3. From the album: Soleil Halpha lunette 120 mm et 80 mm

    Here is the first image taken with my new 120 mm Frehel achromatic and diaphragmed 100 mm sunglasses allowing me to reach an ideal F/D 10 ratio for observation with a standard PST modification on February 24, 2023. The Fabry Perot standard comes from an old 2005 PST Coronado telescope that I have just recovered and transformed with various optical filters. I then installed inside the telescope, a Lumicon rejection filter for the 77 mm aperture Halpha allowing increased contrast and a black background of the resulting image. This construction is perfectly complementary to the 150 mm Halpha telescope and well suited to turbulence depending on the observation conditions.

    © Andre cassese

  4. From the album: refractor 150 mm halpha observatoire Rocbaron

    The contrast offered by a double stack is addictive, the impression of flying over the solar surface like so many waves above the tumultuous ocean. 150 mm Halpha refractor with double PST etalon and Apollo IMX 429 camera

    © Andre cassese

  5. From the album: refractor 150 mm halpha observatoire Rocbaron

    The contrast offered by a double stack is impressive, the impression of flying over the solar surface in three dimensions. 150 mm Halpha refractor with double PST etalon and Apollo IMX 429 camera

    © Andre cassese

  6. From the album: refractor 150 mm halpha observatoire Rocbaron

    A magnificent double-stacked spectacle with a contrast and a striking relief. 13 Janvier 2022 Fabry Perot PST standard 150 mm apo F/D 8 double stack refractor and Apollo IMX 429 camera

    © Andre cassese

  7. From the album: refractor 150 mm halpha observatoire Rocbaron

    This January 10, 2023, a very active sun with beautiful eruptive zones on an infernal boiling cauldron. 150 mm halpha F/D 8 telescope with double PST standard, 2 x barlow and Apollo IMX 429 camera.

    © Andre cassese

  8. From the album: refractor 150 mm halpha observatoire Rocbaron

    Photo sunspot group made with a 150 mm F/D 8 apo halpha telescope and two optimized Fabry Perot PST standards and an IMX Apollo 429 camera at the Rocbaron observatory (France).

    © andre Cassese

  9. From the album: refractor 150 mm halpha observatoire Rocbaron

    Solar panorama and protuberances at the edge of the double limb Fabry Perot PST December 28, 2022 Refractor 150 mm F/D 8 Halpha Camera Apollo IMX 429 player one - Observatory of Robaron (France)

    © Andre cassese

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