Jupiter under 80mm refractor

universe24 · Post by **universe24** » Sun Apr 24, 2005 7:45 pm

Hi,

It been long time I didn't share my astrophoto here. Attached is Jupiter image I taken on 19Apr2005.
The first time, I used a small aperture telescope rather than my 8" SCT. I would like to try how much detail we can get by small aperture telescope. And the result is as below.

AGMI · Post by **AGMI** » Sun Apr 24, 2005 7:55 pm

what the...!!?!? An 80mm Achromat can take that????

Post by **weixing** » Sun Apr 24, 2005 8:01 pm

Hi,
Why can't... did you look at the number of frame stack?? 900 frames!! This is the power of image processing.

Have a nice day.

AGMI · Post by **AGMI** » Sun Apr 24, 2005 8:06 pm

oh..never seen it before..nice pic..

Post by **Airconvent** » Mon Apr 25, 2005 2:25 am

wow...william
Most impressive for an 80mm. Considering I only have an ED80 right now, this is inspiring!
I suppose your scope was tracking when you took the pictures? otherwise how to take 900 shots??

rich

Post by **VinSnr** » Mon Apr 25, 2005 7:18 am

Airconvent wrote:wow...william
Most impressive for an 80mm. Considering I only have an ED80 right now, this is inspiring!
I suppose your scope was tracking when you took the pictures? otherwise how to take 900 shots??

rich

He use webcam....so it is 900 frames not shots.

You don't really need a tracking mount for this....provided you can move the mount smoothly and keep the planet within the view of the webcam. Not easy, and a tracking mount certainly helps.

universe24 · Post by **universe24** » Mon Apr 25, 2005 11:41 am

Airconvent wrote:wow...william
Most impressive for an 80mm. Considering I only have an ED80 right now, this is inspiring!
I suppose your scope was tracking when you took the pictures? otherwise how to take 900 shots??

rich

It is always better if you have motor tracking eq mount. It really help a lot and you do not have to keep adjusting your mount frequently. The advantage is will not cause vibration to your equipment so that you can capture steady images.
You should try out with your ED80. Sure it will give a better result than mine. Well try and good luck.

Jingguo · Post by **Jingguo** » Mon Apr 25, 2005 9:01 pm

hm...motor tracking. i don realli understand d term motor tracking. does d mount auto track d object? or do u need a recticle to track d object and at d same time guide it? thanks alot.

carlogambino · Post by **carlogambino** » Mon Apr 25, 2005 9:59 pm

Abt tracking, read below on equatorial mounts.

An equatorial mount has a Right Ascension (R.A.) axis which is aimed toward Polaris, the north star, to polar align the mount. (or otherwise) Once aligned the telescope can track the sky using slow-motion controls or a clock drive to rotate the Right Ascension axis. This axis allows motion from east to west. The telescope rotates around the mount's declination (dec) axis in order to allow movement north and south. The clock drive basically rotates the RA axis to counter the earth's rotation, so the object viewed is always in the FOV. (until it sets)

A 5 YeaR Old · Post by **A 5 YeaR Old** » Mon Apr 25, 2005 10:22 pm

well, if that guy has steady hands and has perfectly align his OTA and his finder, i dont see how he cant not use a normal EQ mount. He just have to keep jupiter at the crosshair.
But most probably he is using a tracking