Guide scope for my 127 mak

[Knighter]

Hi I am after some advice. I am looking to purchase a guide scope for my 127 mak. Can anyone recommend a cheap camera and scope or even better a bundle that I would purchase. 
many advice would be appreciated 

regards

Matt 

[rob_r]

FLO have two bundles at the moment which I am considering as I have a Mak 127 also, https://www.firstlightoptics.com/guide-cameras/sky-watcher-9x50-finder-adapter-zwo-asi120mm-bundle.html and https://www.firstlightoptics.com/guide-cameras/sky-watcher-evoguide-50ed-guidescope-zwo-asi120mm-bundle.html. I can't really offer a definitive advice as the focal lengths of both scopes need to be considered plus the ratio between them which I gather should be under 4. I'm sure more experienced members could elaborate further for us both on this regarding the arc seconds per pixel and need to read up further on differential flexure. However, entering the information into this calculator for both bundles seems to be a good ratio, https://astronomy.tools/calculators/guidescope_suitability. But you could imagine that a guide scope could in theory be physically longer than the main scope. 

Edited June 12, 2020 by rob_r

[Knighter]

1 hour ago, rob_r said:

FLO have two bundles at the moment which I am considering as I have a Mak 127 also, https://www.firstlightoptics.com/guide-cameras/sky-watcher-9x50-finder-adapter-zwo-asi120mm-bundle.html and https://www.firstlightoptics.com/guide-cameras/sky-watcher-evoguide-50ed-guidescope-zwo-asi120mm-bundle.html. I can't really offer a definitive advice as the focal lengths of both scopes need to be considered plus the ratio between them which I gather should be under 4. I'm sure more experienced members could elaborate further for us both on this regarding the arc seconds per pixel and need to read up further on differential flexure. However, entering the information into this calculator for both bundles seems to be a good ratio, https://astronomy.tools/calculators/guidescope_suitability. But you could imagine that a guide scope could in theory be physically longer than the main scope. 

Hi Rob yes I have quickly found it’s a bit of a mine field when it comes to purchasing filters, eyepieces etc so these forums are a bit of a god send with astronomers with a huge amount of experience. 
I did see those but also saw this one 

https://www.google.co.uk/amp/s/h5.aliexpress.com/item/32845131969.html

you can get it for around £80 in the uk. The drivers are from the ASIAIR website so used with a skywatcher scope is a slightly cheaper alternative. 
i have ordered the ASIAIR pro and camera to work with my iPad so want to make sure it works with that kit and their app. I know the one from FLO will work as the camera is from them. Just seeing if there was a slightly cheaper alternative as my budget has gone out the window with recent purchases