These are my three models from below:
Delta Titanium ED50
Pentax PF-65EDAII
Pentax PF-65EDII
The Delta 50 only has a focal length of 170mm.
This is truly the perfect backpack and travel scope!
It comes with a 7,5-22,5x zoom eyepiece which is actually of decent quality. But I am not a fan of zoom eyepieces so I use it with Baader Morpheus eyepieces instead.
The eyelens is ~36,5mm and this eyepiece provides more than sufficient eye relief with eyeglasses and 76deg AFOV!
All of these three scopes provide images with very good color correction. But they are not the choice for very high magnifications.
I consider Delta 50 as good up to around 20x and Pentax 65 up to around 30x.
With Morpheus 17,5mm eyepiece they give 10 vs 22x, and with 12,5mm eyepiece 13,5 vs 31x.
Spottingscopes are great for as well birding, nature studies and astronomy(at least the angled ones).
And the main reason I chose these models is the 1,25 inch hole for astronomical eyepieces. This gives you hundreds of eyepiece options!
The possibility to use astronomical eyepieces is great.
Last weekend I participated in a starparty and here is a picture of the setup. I guess it's a pretty odd telescope at a starparty beside other's, for example, 120mm refractors and 200mm Newtons!
Delta Titanium ED50
Pentax PF-65EDAII
Pentax PF-65EDII
The Delta 50 only has a focal length of 170mm.
This is truly the perfect backpack and travel scope!
It comes with a 7,5-22,5x zoom eyepiece which is actually of decent quality. But I am not a fan of zoom eyepieces so I use it with Baader Morpheus eyepieces instead.
The eyelens is ~36,5mm and this eyepiece provides more than sufficient eye relief with eyeglasses and 76deg AFOV!
All of these three scopes provide images with very good color correction. But they are not the choice for very high magnifications.
I consider Delta 50 as good up to around 20x and Pentax 65 up to around 30x.
With Morpheus 17,5mm eyepiece they give 10 vs 22x, and with 12,5mm eyepiece 13,5 vs 31x.
Spottingscopes are great for as well birding, nature studies and astronomy(at least the angled ones).
And the main reason I chose these models is the 1,25 inch hole for astronomical eyepieces. This gives you hundreds of eyepiece options!
The possibility to use astronomical eyepieces is great.
Last weekend I participated in a starparty and here is a picture of the setup. I guess it's a pretty odd telescope at a starparty beside other's, for example, 120mm refractors and 200mm Newtons!
Last edited:
