Thursday, January 14, 2010

My partial solar eclipse observation plan

I will try to do the following:

1. Observation at home: I shall setup my H-alpha as well as white light from inside my home.

H-alpha would be using my Ranger with NGF-CM, together with my Coronado Solarmax 40 with BF10, image capturing by my DMK 31AF03.AS with a reducer in order to see the full solar disc. I shall focus on the prominence by pushing up the exposure. I wish to see some prominences cut by the lunar disc but that would require luck. And it would be interesting to have the lunar disc to occult any active regions. To have both goals reached, I have to adjust the exposure slightly more than what surface detail would require.

Along side with it, I will have my Canon 450D, Canon 100-400mm f/4.5-5.6L with Kenko 2x, together with my Thousand Oaks Type 2+ Glass filter. This setup will take snapshots automatically with a timer control, I will be capturing a shot every 10 seconds using spot metering.

After around 5:00pm, I shall go outside with my white light setup on a simple camera tripod.

2. Observation outside: I shall choose a location which I can see the sun closer to the horizon, I wish that I can capture some shots without solar filter when the sun is low enough. Yes, it's pretty dangerous, but the rule of thumb is "eyes off" from the view finder.

Consider a red eclisped sunset, with some more terrestial scene, it should be something very nice indeed. As a result, I shall also bright a wider lens along with me for that purpose.

(I shall be in Nam Cheong Playground where I should be able to see the sun setting... and I expect that even there're places that I can see even lower, there would be a high chance of cloud at that angle given Hong Kong weather)

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