Engineering Design of Binoculars & Hobby Telescopes

AI Thread Summary
Resources for e-Documents and eBooks on choosing hobby telescopes and binoculars focus on basic concepts and technical guidelines while considering affordability. A request for technical comparison charts of commercially available options highlights the need for informed decision-making. The discussion notes that the Dobsonian telescope is a popular DIY project, with ample online references available for building, aligning, and using it. Participants emphasize the importance of understanding differentiators and features that approach professional quality. Overall, the conversation underscores the value of accessible educational materials for hobbyists in the optics field.
NSK8700
Messages
19
Reaction score
0
Where can one get a e-Documents/eBooks that will provide for the basic concepts, Technical
guidelines to go about choosing Hobby Telescopes & general purpose Binoculars (construct
differentiators and features that conceptually approach professional quality) but stays
within the boundary of individual affordability. A technical comparison charts of various
commercially available Binoculars & Hobby Telescopes would be very appropriate in this
context.
 
Engineering news on Phys.org
The most popular build your own telescope is a "dobsonian" there are lots of references on the net about building, aligning and using one
 
Hi all, I have a question. So from the derivation of the Isentropic process relationship PV^gamma = constant, there is a step dW = PdV, which can only be said for quasi-equilibrium (or reversible) processes. As such I believe PV^gamma = constant (and the family of equations) should not be applicable to just adiabatic processes? Ie, it should be applicable only for adiabatic + reversible = isentropic processes? However, I've seen couple of online notes/books, and...
I have an engine that uses a dry sump oiling system. The oil collection pan has three AN fittings to use for scavenging. Two of the fittings are approximately on the same level, the third is about 1/2 to 3/4 inch higher than the other two. The system ran for years with no problem using a three stage pump (one pressure and two scavenge stages). The two scavenge stages were connected at times to any two of the three AN fittings on the tank. Recently I tried an upgrade to a four stage pump...
Back
Top