Photography by Ian L. Sitren

AR3615 Even Larger

Sunspot Region AR3615 in the last 24hrs has increased in size 50% and now made up of 63 individual Sunspots. It is 3,360 million square kilometers Almost 20 times the size of the Earth. It continues to generate flares and geo-magnetic storms. March 25 2024 Palm Springs California

3 responses

  1. vijay kumar's avatar
    vijay kumar

    wonder with which equipment and calibrations were used to capture this wonderful event!😍

    April 9, 2024 at 5:22 am

    • I use a Fujifilm X-T3 camera with the booster, the Fujifilm XF100-400mm f/4.5-5.6 R LM OIS WR lens with 2x extender and a cable release. It is mounted on an Induro tripod with a Benro geared head. Thanks!

      April 9, 2024 at 2:40 pm

    • To further answer your question… I shoot in manual with iso1000, f/11 and 1/250th. I do bracket my exposures.

      April 9, 2024 at 2:43 pm

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