Friday, March 07, 2025

A new solar season

By new season, I mean the sun goes up high enough to clear the trees.

With reducer:



With 2x barlows:



At prime focus, two frames merged:



This is my new setup, actually, it was an old setup which left unused for quite sometime.  The new solar finder is effective, the mount could hold the setup rather easily despite the very windy condition.

Love this one, except somehow I want a hand controller for faster slewing.

Saturday, February 01, 2025

First image taken with my Canon EF 50mm f1.8

 Just a random shot to try out wider field of view, no idea ahout image processing:


Processed by Siril

Monday, January 27, 2025

First M45

 Processed by Siril, 20 frames stacked, 300s exposure:



Maybe stretched a bit too much.  Anyway, I do not enjoy image processing afterall.


Tuesday, January 21, 2025

Making my iOptron more table

I have a permanent pier setup, but it was not made for the iOptron. 

A small adapter is required but it becomes the weakest link.

The problem is the stub but since it was made by aluminium so I guess it could be removed.  I took the plunge to do it this morning, it's not difficult.

I was tempted to buy another better adapter so that I don't have to do this irreversible change, but then there is no guarantee that it would fit.  And I hate to spend money, especially when it might not even work.

This is now a perfect fit!

Saturday, January 18, 2025

20250117 Jupiter again

Spent more than half an hour to fine tune the collimation, found something strange on the out of focus pattern.  


That irregularity on the 6 O' Clock location.

I captured 60s worth of frames this time, instead of 1000 frames. 

30% frames stacked:



60% frames stacked:




Thursday, January 16, 2025

20250115 Planet exercise

It's very windy, so no good image is possible, so it's just for fun.

The bigger CMOS is simple to use, with the flip mirror everything is quick and simple.

Jupiter first, it's higher in the sky.


And then mars, it's lower and as always, the effect of atmospheric dispersion is much apparent.

Just for fun.

Stacked and processed two more shots:




Saturday, January 04, 2025

Family stargazing

Randomly asked my kids to see if they are interested in stargazing, and to my surprise they both said yes.

Forecast told that it's going to be cloudy, and cloud started rolling when we observe.

Before it was totally covered, we watched M45, M42, Betelgeuse, Mars (to see the colors) and finally Jupiter with the Galilean satellites.