Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun astronomy A photograph of the sun at a particular frequency range (by means of a variable filter)

Etymologies

Sorry, no etymologies found.

Support

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Examples

  • "Digital filtergram shows a very active Prominence on the NE limb", taken on 22 April

    Museum Blogs 2009

  • "Digital filtergram shows a nice Prominence on the SW limb reaching an approximate height of 56,000 km", taken on 16 May 2009 at 22: 25 UT, image by Monty Leventhal OAM

    Museum Blogs 2009

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