[Kieken]

The second part

The pictures show that the structure of lens is actually as far as possible identical. Only with the 21mm Hyperion was noticeable that the reflex of a cement surface changed the position. A further view applied for possible color distortions. Already with daylight no difference between Hyperion, Stratus and LVW of same focal length could be determined. Also before an even background lighting (scanner transmitted light essay) no difference in color was recognizable. Still the different camera adapters are to receive special mention. For the adaptation of digital cameras with firm objective adapter of the "SP54"-Gewinde is to that of hyperion on M28, M37, M46, M49, M52, M55, M58 and M62 at the disposal. These rings provide for as short an adaptation as possible. If this is too close for a camera model, which with my Casio QV 3500 ex the case was, then a 9mm extension ring can be screwed on the Hyperion. Unfortunately 9mm extension for my Casio is too much of the good one, so that a circle of the visual field is only illuminated. The M58-Adapter is too short actually only around 1mm. As soon as I pushed only one calling card between ring and eyepiece, the distance was sufficient and the objective of the camera could be driven out. The picture was so also fully illuminated. On the problem addressed Baader announced to attach in the future small metal rings which are to increase like a "wearing part" the distance around 0,5mm and 1mm. Hyperion in practice at the 8"f/4 Newton (R200SS, GSO 600) presented themselves hyperion nearly completely identically to the well-known Stratus. The view behavior is very pleasantly, particularly also by the eyecup made of silicone rubber, which puts still better to the eye socket, as the somewhat firmer version at the LVW. The viewing distance is fully eyeglass wearer suited. In the direct comparison with models of Vixen showed up the LVW with the 13mm, 17mm and 21mm Hyperion a worse edge illustration, which became clearer with increasing eyepiece focal length. With the short focal lengths the effect lost itself, so that with the 8mm Hyperion only weakly left the edge illustration, while this was not to be noticed no more with the LVW 8. With the 5mm the illustration approached strongly to the LVW on, and also with 3,5mm the picture remained the same. Like also the LVW Hyperion and Stratus show also a star illustration increased easily in the picture center with 5mm and 8mm. Mars and moon observations supplied very similar results with the direct comparison between Hyperion, Stratus and LVW. All three 3,5mm of eyepieces had to give themselves however (naturally substantially more expensive) the 3,5mm nagler type 6 struck, both at Mars and at M13. Nagler showed somewhat finer stars and more contrast for example during the Mars observation. The 8"f/6 Newton received its first employment with a careful comparison of the two 21mm Hyperion and Stratus, which had to place themselves thereby to the LVW 22 and the Pentax XL 21. The first view applied thereby for the edge illustration. Here cut the LVW 22 as the best eyepiece off. The illustration could be recognized up to the edge practically perfectly and an enlargement of the star illustration to briefly before the edge of visual field hardly. With the criterion then the two LVW clones, both followed edge illustration with clearly increased star illustrations, without recognizable difference among themselves. Short Nachfokussieren showed that the sharpness loss is caused mainly by bildfeldwoelbung, because the stars could be after-focused to short before the edge well. The unexpected tail light in this discipline was the Pentax XL. It showed visibly distorted stars at the edge. Nevertheless the edge illustration was well useful with the XL. The XL scored then however concerning the scattered light suppression. No unwanted clarification of the sky background was to be noticed, while Stratus and Hyperion showed a broad ring of lightened sky around the edge of the visual field. May have been concerned ten to fifteen per cent. Details look showed then very weakly a similar clarification with the LVW, which falls practically in the eye only if one knows and for it looks for the effect from the two clones. The most important test however should be the comparison of the transmission on the basis recognizable star size classes. For this that served quite close open star clusters NGC 7789 during its zenith passage. At the edge of this star cluster a weak star combination was according to kind of five cube eyes. The middle star was here easy to constitute, the four outside stars clearly more with difficulty, and one of it only very with difficulty indirectly. On the basis these stamping seeds star combination could be compared the achievement of the eyepieces quite well. That such a test was necessary shows however already that it concerns no large differences. When recognizing the star combination Pentax XL and LVW lay together closely, whereby the LVW did not have a disadvantage despite its weaker enlargement. Also the Hyperion was on a very similar level, perhaps around a breath more badly. In the disadvantage only the Stratus was, it showed indirectly only four stars of the combination, and these quite laborious. Here the manufacturer data of an improved remuneration seem to be confirmed with hyperion. In the case of a further observation at M38 eyepieces a similar picture showed up with the comparison of the 13mm. Here the something was to be recognized better achievement of the Hyperion opposite the Stratus by the fact that one of the weaker heap members was directly recognizable in the Stratus only indirectly, in the Hyperion however. The LVW 13 lay thereby with the Hyperion up, showed thus the star likewise directly. Were however no stars, which were indirectly recognizable only in the Hyperion or LVW. If a very weak star was visible in the Hyperion, then also in the Stratus. The illustration in the picture center was perfectly and identical with all three series practically at the f/6-Newton. The edge illustration was best with the LVW, whereby only closely in the edge an easily after-focusable Unschaerfe showed up. Hyperion and Stratus showed more Unschaerfe, which could be after-focused at the edge also not more completely. With 8mm the illustration of LVW and Hyperion is near identically, only closely at the edge shows the Hyperion still another little more Unschaerfe by bildfeldwoelbung. With 5mm and 3,5mm then no differences can be recognized more. To notice it participates that this applies also to the recognizability of stars, because Stratus and Hyperion showed always the same stars directly as indirect. The clarification of the edge of image field was noticeable again particularly with the Stratus and only little more weakly with the Hyperion. During the further observations thereby the recognizability of star size classes was particularly the center of attention. The eyepieces were used now again with f/4. Zenith near small Hantelnebel M 76 was observed with the focal lengths 5mm and 8mm, in order to compare weakest field stars in the picture center. Here practically no differences between LVW, Stratus and Hyperion could be determined. All eyepieces showed the same stars, also such, which were only indirectly recognizable. By a remuneration advantage that of hyperion was to be noticed here nothing, also not with the nebula details. After the clones cut off with f/4 and f/6 quite pleasantly, expectations were accordingly high with the employment at the C8. In addition, Stratus and Hyperion did not get along here with the bildfeldwoelbung well, so that with 21mm to 13mm again an indistinct edge illustration showed up. The illustration was better, than at the f/6-Newton, but the LVW originals worked on this equipment again better, just as a 14mm Pentax XW. Stratus and hyperion showed also again the lightened edge of visual field. In the picture center the illustration was however good with all eyepieces. Very similarly the achievement showed up also in the f/11 achromatic objectives (Meade Explorer 395, 90/1000). A further point, which it applied to check off, was the employment that of hyperion than 2"eyepiece. Without the Barlow element the characteristics of the eyepiece change drastically. The viewing distance of 20mm is lost, so that one must bring the eye really very closely to the eyepiece. The rubber shell must be turned down inevitably. How closely one must bring the eye to the eyepiece, is easily not to be determined, because the apparent visual field becomes enormous, practically unueberblickbar. Possibly more than 90° apparent visual field is present. Of it however hardly 40° is really cleanly shown and already outside of for instance 50° is more or less useless with f/6 the star illustration. With f/4 it becomes still worse. Without the Barlow element are those of hyperion thus if necessary for visiting larger objects, which can be differentiated also of an indistinct star to use. One receives then an eyepiece around 35mm to 40mm. relative to little observation time was dedicated the idea to shorten hyperion by verlaengerungshuelsen in the 2"filter thread in the focal length. This functioned so far completely well, whereby the edge illustration hardly changed. For more exact results probably in the near future a report of the "father thoughts" will provide.