> HOW TO IMPROVE OUR POLAR ALIGN ACCURACY
To check the polar alignment of your telescope look trough the polar scope. When turning the Ra axis the polar star should move in the exact circle in the eyepiece without any deviation. From the Go To control panel, you can check the polar accuracy after alining the telescope by going to align – > display polar alignment. The deviation should be not more then a few minutes. You can use the menu option to correct the alignment. The telescope will point a star and then you will have to center it in the field of view by moving only the azimuth and altitude axis.
So in short : align -> polar align, you can use the the procedure for precise polar alignment. The telescope will first point the last object in the field. You will need to center it with the controls. Then the scope will point again and you will need to center the object again but this time using the azimuth and latitude axises of the head. when done the RA mount axises will point at the celestial pole and star trails during long exposures will be reduced.
Good alignment is critical for long exposure photography. Good luck!
http://www.deepskywatch.com/deep-sky-hunter-atlas.html This is an amazing resource. Detailed atlas of all the sky with NGC and IC objects.
Reading a new product that claims to be 100x time more powerful then conventional telescope, I realise that this is just an astrograph with a digital camera that is doing stacked images and show them trought eyepiece or App.
I am so impressed with the K5 ability to quickly gather signal from nebulas (Quantum efficiency) and galaxies, so I decide to take one more K5 and to remove the IR-cut Filter of the old one.
Recently I got one very good lens the Asahi Takumar 135mm 1:2.5. This is fast telephoto lens and from my point of view a good lens should be with aperture from 1:1,2 to 1:2,8.
Moon at 45% illumination and 70x magnification. With aperture of 200mm,14,1 stops dynamic range, color depth of 23.7 bits at this image there are slight color variation on the moon surface that reveals it’s structure.