John McDonald

Uploaded 17-May-15

Taken 17-May-15

Visitors 123

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Info

Photo Info

Dimensions2000 x 1333

Original file size1.23 MB

Image typeJPEG

Color spaceAdobe RGB (1998)

Date taken18-May-15 00:12

Date modified17-May-15 21:22

Shooting Conditions

Camera makeCanon

Camera modelCanon EOS REBEL T3i

Focal length50 mm

Exposure1/50 at f/NA

FlashNot fired, compulsory mode

Exposure bias0 EV

Exposure modeManual

Exposure prog.Manual

ISO speedISO 400

Metering modePattern

Sun in H-alpha

The sun is quite dynamic so it is always interesting to see what it is doing when there is a sunny day. This image shows some nice prominences and quite a bit of surface detail from the churning atmosphere.
2015-05-17 on a clear day with temp about 20 deg C.
Modified Canon T31 with 2.5X powermate on Lunt 60mm scope with 50mm double stack filter. Mount was a Skywatcher HEQ5.
Exposure - single frame for 1/50s at ISO 400.
Processing in ACR and Photoshop.