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andre2

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Posts posted by andre2


  1. Hi, l want to buy a zoom eyepiece for my pst. ( and dond want to use normal eyepieses annymore i have the 9 mm X-CEL)  i cant buy a planetery zoom 7.2-21.5  ( a lunt  zoom clone) for just €135.  But i can also go for the pentax XF zoom €319 .  Do you think the pentax is worth the money for my coronado pst only?  Thanks for the advice!


  2. Hi, is it worth to buy a easy to use DSRL  €300 nikon camera as i am a beginner? Can i REALLY see the proms in full glory when i zoom in at camera mode? Can i also see them in the LCD screen of the camera good withoud to do ( mutch) tweaking? Thanks!!! ( for the pst or lunt 50)


  3. On 3 januari 2015 at 22:45, jabeoo1 said:

    Lunt LS50THa Review

     

    The Lunt LS50THa telescope is my first solar scope. It is also my first refractor. I am using it on the older model 'Vixen Porta 2' mount via a Lunt dovetail plate. The scope has the addition of a Televue sol finder.

    From Transit

    The package arrived well protected. The outer box contained a second box surrounded by loose foam infill. The inner box contained firm foam which was shaped to hold the contents very securely. Both boxes were tape sealed with Lunt logo tape. I assume it was factory sealed in the USA and remained untouched until arrival. This firm foam could easily be removed and if slightly cut (1cm off either side) it could fit into a 'standard' hard case for a cheap long term solution for transport and safe storage.  So far I am not aware of an official Lunt case for the 50mm model.

    First Impressions & Setup

    Read the instructions first ! There is a useful piece of information advising that you check the diagonal is secure by checking if the screw on the side of the focuser is finger tight before removing the scope. The risk of the B400 or B600 blocking filter falling off and breaking does not bear thinking about. Do not get too excited and make this mistake !

    The scope feels compact but substantial and weighs 2.15 Kg without an eyepiece. The helical focuser moves with a nice resistance as does the pressure tuner (a tiny amount of play on the helical focuser is present but this does not cause any issue in use). The heavy metal dust cap that covers the front lens has a long thread and feels reassuring to take off and replace. All glass surfaces were spotless on inspection after removal from the box.

    I realized pretty quickly I would have to loosen the clamshell and turn it 90 degrees to allow correct orientation to the mount. This was easy to do, as was attaching the dovetail plate and sol finder.

    In Use

    I have done around 4-5 hours observation time so far with the following eyepieces:

     

    Televue 25mm Plossl (x14)

    Televue 15mm Plossl (x23.3)

    Televue 11mm Plossl (31.8)

    Takahashi LE 7.5mm (x46.6)

    I noticed that to get sharp focus with the TV eyepieces, adding the supplied adapter between the focuser and B600 filter achieved it perfectly.

    The scope is very intuitive to use with the information from the short instruction manual.

    The sol finder was exactly aligned on first attempt and captured the sun in the 25mm EP, no tinkering needed. The helical focuser when turned produced a sharp limbed disc. The pressure tuner then bought out extensive detail of both disk and prominences, and a quick fine tune back on the helical focuser produced a sharp and pleasantly detailed image.

     

    Seeing a hedgerow prominence for the first time was an outstanding start, and I was very satisfied with the ability to get a very sharp contrasted view. Different levels of density were really obvious, as was the changing state of the prominence. As the sun moved across the FOV I noticed that the prominence had the tendency to fade. With higher magnification this phenomenon is less obvious and is not present at all in the 7.5 mm @ x 46.6. Major features at lower power seem to benefit from placement within a 'sweet spot' in the field of view, especially if your aim is to tease out every last detail of that particular feature. This is in no way distracting and is no doubt part of the systems characteristics. Part of the charm is learning the knack of keeping the focus, the pressure tuner and FOV parameters in check to the feature/s you are trying to observe.

     

    Scanning the solar limb once tuned to any prominence is great fun, especially as many more become apparent that may have been overseen completely. The pressure tuned etalon in use here is rewarding at bringing out the fullest potential of the morphology of the prominences.

     

    With both the pressure tuner and focuser set, I found the 15mm did a lovely job of presenting a nice view of both limb and disc features at the same time. Only a little tweaking of the slow motion controls on the tripod to maintain the view or vary it slightly was needed. Quiet filament regions are presented well along with the sometimes subtle but lighter associated filament channels. Active regions also feature well. Sunspots appear very dark and sharp. With patience all features become more evident in complexity. The only thing I can compare the views to is to imagine viewing a very dynamic Jupiter on steroids in excellent seeing. All this said with the Sun currently in winter placement I have not yet had the opportunity to release the instruments full potential.

    Is the lunt 400 BF is woth it over the now €300 cheeper PST!?


  4. On 4 januari 2015 at 02:06, Qualia said:

    :grin:

    Excellent review, Jabe and thank you for putting this together. Indeed, I think it is the first proper review I've read on the web since the Lunt 50mm has come out and I'm really happy everything things seems sorted out of the box without any quality control issues to contend with. The Lunt 50mm really sounds a great scope and all things considered, for H-alpha viewing is very reasonably priced.

    I've seen some images of the 50mm double stacked and it has provided quite stunning views and now reading through your review, I wonder if the pressure tuner is also making a significant improvement on the more traditional tilt design? If this were so, might not the 50mm give the 60mm entry scope a good run for its money? 

    Thanks again for your time and effort :smiley:

    Hi i want to order the lunt 50 mm 400BF and a 25 mm vixen NPT €41 eyepiece to use it with a simple trypod for now. Do you think it is worth the €300 more then the PST?

     


  5. On 31 december 2014 at 16:32, nipper1967 said:

    hello again the focal length of the scope is 350mm . l cant say l've noticed any ghosting what l will say is focusing is very precise when l find focus the slightest turn of the focuser back or foreward takes it out again that said it focuses very well . l find the pressure tuner a little harder to judge l tend to look at filaments and get them as sharpe as possible then l look at a prommences and if there sharpe l leave it at that. l usually start with the seben 8-24 zoom eye piece at 24 mm so l can find the sun once l've found it l wind it down to about 12mm and then focus and use the pressure tuner , l can take it down to 8mm but the sun almost fills up the eyepiece so l find 12mm is good for seeing the surface detail and prommenences. l managed to get out for a short while this afternoon but the clouds rolled in after about fifteen minutes.

     


  6. On 29 december 2014 at 22:19, nipper1967 said:

    l've managed to have a couple of good sessions with my new scope now so l thought l'd write a bit of a review. the first thing l'd like to say is l cannot compare it with any other hydrogen-alpha telescope as this the first one l have ever looked through , my only other experience with solar viewing has been with a baader solar filter on my celestron nexstar 8se . First impressions of the scope is it's a well made piece of kit ,l have mounted it on a photographic tripod which will do for now the sun is quite low. The first eyepiece l used was a 25mm celestron plossl lt took me a few minutes to find the sun because l don't have a finderscope yet l ordered the lunt sol searcher with the scope but it was shipped separately and it hasn't arrived yet (will have to contact flo if it hasn't arrived when they reopen) as it happened the sun was well focused without having to touch the focuser l could see some prominences and a couple of dark sun spots. Now it was time to use the pressure tuner l followed the instructions unscrewed it and then reengaged it on the threads slowly turning it clockwise this gradually brings out all the surface detail which looks amazing , l can see lots of filaments and other details l cannot describe . The prominences are very sharp, deep red against a black sky on Monday l counted eight although today was a bit quieter .

    l have tried a few eyepieces the plossl's seem to work quite well but l have a set of celestron x-cel lx's and it dos'nt seem to like these. ln the back of my mind l seem to remember reading someone saying the seben 8-24mm zoom was good for h-alpha l've one of those stuck in a draw l've never really liked it bought it after reading good reviews on amazon so l thought l'd give it a try, it works well the best of any of the eyepieces l've got, good clear images.

    Sorry l cannot put on any images l am purely visual at the moment but believe me the view is amazing a totally different world to white light, well worth the wait.

    hi andre from holland. In my hart i want to buy the  lunt 50 mm and vixen NPT 25 mm eyepiece and a simple trypot ( for now) . But, when i ask at the solaradvice forum : the PST or lunt 50 400BF?  Someone say: " i prefer the fews through the PST". Now i am " Affrait" to go for the lunt!

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