Cols Astro Journey

Thanks Billy, I also have a crop sensor DSLR which should allow the telescope to cover the whole sensor. I was just hoping that If I was able to use all three of my DSLR's then I could effectively have three telescopes for the price of one.

Maybe its something the manufacturers should consider.😆

1 minute ago, Cornelius Varley said:

This is a myth. The focal length doesn't change, just the field of view changes which is dictated by the size of the sensor.

Your right focal length does not change but the field of view does but its the same difference

Thanks Billy, much appreciated, is there anywhere I can find out which telescopes would cover a full frame sensor, or a table showing what each telescope is able to cover in terms of sensor size?

Thanks Miguel, I appreciate that its the same magnification from the telescope (750mm) but the sensor size in normal photography can effectively increase/decrease focal length by using the same lens on different cameras that have different sized sensors and I just wanted to confirm its the same using a telescope.

I guess I just need to know if its possible to use/focus this telescope (150pds) with all three sensors.

Anybody know if thats posible?

Hi thanks to the responses but just checked on astronomy tools (as very kindly suggested) and came up with this (see attached) which is what I was expecting but it different from your responses so I am now even more confused.

Thanks for the response but assuming that all of the sensor is covered then that would surely magnify the image? or am I missing something.

Is it possible to cover different size sensors? as that would explain your response and if so what sensor size is suited to the S/W 150pds

Hi all, just wanted someone to confirm something for me.

I am a pro photographer and just getting into this hobby, so I have plenty of photographic equipment and am about to pull the trigger on a S/W Heq5 pro mount and the S/W 150pds telescope (750mm focal length) and I assume my camera sensor will dictate the focal length?

So can I assume with my full frame sensor (nikon d750) the focal length to be 750mm, with my crop sensor (nikon d5300) 1125mm and with my M43 olympus to be 1500mm.

I hope that makes sense but I cant find this information any where else?