EAA Observing Session 15, January15/01/2025
Solar

Session Data

  • Date:  15/01/2025
  • Time:  11:07 – 12:07 UT
  • Seeing: I. Excellent
  • Transparency: I. Extremely clear
  • Temp: 9 C,
  • Air Pressure: 1036 mb
  • Humidity: 88%
  • Dew Point: 7 C
  • Wind Speed: 6 mph

Scope: TMB 80 f/6  Camera: ZWO ASI 183MM , SBIG G filter. No Darks or Flats taken.

All Images are North up and East to the Left

Click image for larger version

Solar Parameters

Bo: -4.61 degrees

Lo: 245.93 degrees

P: -4.99 degrees

Diameter: 32′ 34.3″

Groups

Sun Groups: 6

Sun Spots: 41

Wolf Number (R): 101

North Groups: 4

North Spots: 25

South Groups: 2

South Spots: 16

Q: 19

These are Sunspot groups 3962 left and 3959 right.

The image on the left were taken with Scope: Altair 250mm f/8 Camera: ZWO ASI 183MM , SBIG G filter. No Darks or Flats taken. I used Sharpcap’s Live Stack for both images with a total of about 100 of the best 5%.

Comparing the two scopes. I’m really impressed with how well the TMB 80 stacks up with the larger scope. The image on the right is the full 2752 x 2752 from the TMB image cropped at 100%, to provide a similar FOV to the image from the Altair.