Tuesday, December 27, 2016

20161227 Sun

Cold front coming, seeing exceptionally poor from 0-2/10 at best... cannot properly focus.

0604 (UT) with a reducer, some nice filaments around but cannot go any higher power.

Monday, December 19, 2016

20161219 Sun

We finally have a small active region (AR2619) today!

Here is a 5x shot with a reducer (forgot to remove), note the dust on the CMOS, 0701 (UT):-

And now the full disc, 0655 (UT):-

Friday, December 16, 2016

20161216 Sun

Very poor seeing due to the cold front, no detail even with reducer:

0702 (UT), just a record.

Tuesday, December 13, 2016

20161213 Sun

Another day, my elder daughter was still sick at home, and I stayed with her.

1359 (GMT+8).

Sun 20161212

Another imaging session, but the sun was not very active so I only took the following full disc shot with my Ranger + reducer lens.

Gain was set to zero this time, 1338 (GMT+8):-

Saturday, December 10, 2016

20161128 Sun

I don't know if this is the first time for me to use the ASI120mm, I had one before but sold shortly, this one was newly acquired.

First one taken with my Ranger with a reducer lens, 1245 (GMT+8):-

Second one with a 3x barlows, 2 frames mosaic... uneven illumination, long time no practice, taken at 1253 and 1255 (GMT+8).:-

After taking the images, I found that I didn't set the gain to zero and it was set at 50% which is very high.  No wonder why the result image is rather noisy.

I found no more Newton's ring even at 3x?

Wednesday, August 31, 2016

Motoring the DEC axis of Sky Adventurer

The first working version is finished...

Monday, August 29, 2016

A new budget notebook

My Asus Eee has been repaired several times, I've replaced its keyboard, hard drive, battery and even CPU/chipset fan.  The transformer is dying so that I could use it either to charge up the battery or to operate the computer but not both, otherwise, the computer will reboot itself randomly.  Worst yet, it is still running Windows XP and would be obsolete enough soon, for example, no more dropbox in the near future.

So I took the plunge to buy a new notebook, but I was on a budget.  I want something light and small, despite I could use my Teclast tablet when I want absolute portability.  Finally, I got a Acer Aspire ES 11 which features a bigger display, and it's lighter in weight and has better battery life.  USB 3.0 port is available as well, but of course, it won't be much faster.  This is a fact of life, you choose only two: cost, performance, portability.

I have installed everything there so that it would be my next work horse.  ASI 120mm and 120mc drivers were installed,  that megapixel monochrome camera too!  No more dropped frame with the all the cameras.  So nice!