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DAUERHAFT Planetary Eyepiece,Metal HD Telescope Eyepiece 5mm Focal Length 58 Degrees Full Multilayer Coated Green Lens Planetary Eyepiece,for Deep Space Objects?
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> finding objects without a good low power eyepiece
25mm and 32mm does make a difference, but 25mm is also going to work as overview eyepiece.
Looking at the field of view image I made (http://blog.pixelgiraffe.com/wp-content/uploads/2020/05/Mangofication-On-114900-Didgeridoo.png) I might have messed up with the pictures, but the true field stated is correct.
Field size 25mm VS 32mm: https://astronomy.tools/calculators/field_of_view/?fov[]=1917|185|||1||&fov[]=1917|63|||1||&messier=31
Even wider field of views are only possible with 2-inch eyepieces that won't fit this telescope anyway :-) The 40mm Plössl has a narrower 43° AFOV and that results in about the same true field as a 32mm 52°.
> cheshire
These telescopes tend to hold collimation very well. You can also eyeball it and do the no-tool method using Polaris.
> Edit: One more question is the 5mm you shared is also 58def fov right? (https://www.amazon.com/DAUERHAFT-Telescope-Eyepiece-1-25Inch-Objects/dp/B08PZC8Q2K/)
Yes, the HR Planetary clone have a rather unique look. Decent eye-relief, 58° afov.
> How is it different from $40 you mentioned before. Just better brands?
These are all clones, and prices and sales just vary that much. Usually it's the same.
Hi :-)
> adaptor
Reflectors lack back-focus. A drawtube top would be the best solution, adapters will cause focusing issues.
https://www.ebay.com/itm/233386103208
> focuser top, like this
Oh, yes :-)
I don't have the model, but my assumption is that it'll fit. Or make it fit. ;-)
> isn't a "Bird
Yes, it's actually quite capable :-)
> equatorial
Getting the hang of it? :-)
> eyepieces
The 4mm is pretty poor. As is the kit barlow.
> upgrade to K/MA or P
Not really, at least for the short focal-lengths :-)
The 25 and 12.5mm will show something of course, so do use them for now :-)
32mm 52° Plössl-type, no-name, list for $8-$15 on Amazon sometimes. YMMV. But should be an upgrade if you're unhappy with the 25mm.
No shorter ones under 10mm due to poor eye-relief.
For planets, a 5mm 58° or 6mm 66°.
The 66° offer a long eye-relief & larger apparent field of view. They suffer of some kidney-beaning (shadow when not looking into it straight, but I never had issues when using the eye-cup.).
The 58° have a smaller apparent field of view but are of good quality. Decent eye-relief. Available in a lot of focal-lengths. $40 usually, but sometimes on sale!
Eyepiece examples
- 5mm 58° $26 only one left (prices change quickly on Amazon depending on the supplier).
- 6mm 66° ($29 usually, sometimes cheaper)
- ((Not both 6 and 5, either))
- 32mm, $12 (YMMV)
- Avoid big sets. Overrated, redundant, overpriced, mediocre at best. Avoid the cheap short 62° copper tops and "fake" gold-lines that are just 52° Plössl-type in disguise. Avoid older eyepiece types; Kellner, Huygens, Ramsden etc.
Field of view simulation;
> hate the finderscope
A small finder-scope is pretty bad. The 6x30 right-angle are better and sometimes $20.
> prefer something like iron sights
A simple red-dot finder (usually less $) can work well enough to locate moon and planets at least. No magnification but relaitvely easy to use.
Before I post links, what attachment system's on the tube, if any still?
> inversion
For the telescope or the finder?
Especially in combination with the way EQ mounts, it can be confusing to get to the targets.
On an Altitude-Azimuth mount like a dobsonian it's easier to get used to IMHO.
Erecting adapters and eyepieces exist... But are of poor quality.
> I'm handy
How's the mount working out for you?
You could build a rockerbox
- https://10minuteastronomy.wordpress.com/2010/11/02/how-to-build-a-dobsonian-mount-for-a-5-inch-telescope/
- $5 built, simple cuts, I've done with students :-) http://www.ringohr.de/tmp6/rockerbox_einfach.jpg
Clear skies :-)
Hi :-)
Awesome :-)
When starting out, you could consider the 58° HR Planetary clones. Decent eye-relief, good performance at F/5 for most (shorter) focal-lengths.
Sadly the 4mm isn't on sale at the moment, but there is one ~$25 5mm left: https://www.amazon.com/DAUERHAFT-Telescope-Eyepiece-1-25Inch-Objects/dp/B08PZC8Q2K/
Field of view simulation http://blog.pixelgiraffe.com/wp-content/uploads/2020/06/fov-150-750.png
The kit eyepieces plus the planetary eyepiece will get you started.
I have a zoom eyepiece and budget barlow, and never really use them (only for my daytime spotting scope).
There are also $8 32mm no-name Plössl at Amazon.
Clear skies!
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