Astrophotography Japan / SV48P Telescope Review (Episode 15)
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- Опубліковано 5 жов 2024
- I recently purchased and extensively used the SV48P (achromat) refractor telescope from SVBony. In this video are images and comments about its performance for visual astronomy in the daytime and night, and prime-focus astrophotography of star clusters and nebulae and the moon. Due to the seasonal timing, no evaluation was possible for planetary imaging. Specification comparisons are made to the Orion Short Tube 80 (ST80) design and the SV503 80ED telescope (also) from SVBony.
04:14. Comparison of SV48P and SV503 80ED telescopes
05:20. Comparison of the SV48P & SV503 80ED focusers
06:30. Field rotator on the SV48P
08:45. Specifications of the SV48P versus the ST80 & 80ED telescopes
10:34. Visual Astronomy equipment; field use set-up
13:04. Day-time images with the SV48P
15:40. Prime-focus astrophotography with the SV48P
16:32. Open star-cluster images with the SV48P
18:52. Rosette Nebula (prime-focus imaging)
22:40. Orion Nebula (prime-focus imaging)
23:00. Night-time visual observations of Star clusters (with eyepiece)
25:23. Night-time visual observation of the Moon (with eyepiece)
27:25. Prime-focus imaging of the Moon
28:24. Final words
Excellent review. Just bought one of these scopes as a first astrophotography rig. So glad you mentioned the GIMP software! Will definitely be downloading it.
The SV48P is definitely a good first starter telescope. Even after several years now, it is still my usual visual scope. GIMP works fine for me in post-processing, but it is not really designed for astrophotography. Other free software that complement it are Deep Sky Stacker, Graxpert AI and StarNet plus plus. BTW, my post processing routine has not really changed since my Episode 2 video (ua-cam.com/video/U3HNR2fGlVs/v-deo.html). Except for Graxpert.....it is fantastic! Best wishes and clear skies! PAUL
100% agree! Great choice! The SV48 (first gen - prior to the P) was/is fantastic! I used it for more than a year for visual and it really kicked off my astrophotography journey. It is light, has a great focuser (the P has a rack/pinion/the old one used a Crayford). Finally, I added the Baeder Fringe-killer when imaging bright objects. (A bit strong, but reduced the CA in imaging quite a bit!) For most nebulae, that was not needed! Thanks for the great review! Mark!
Interesting that you also have that scope! Indeed, I think it is a great value for visual astronomy! Clear skies!
I bought one after saw this review.
best review on youtube.
you're awesome
Thanks Fabio! I try hard to be comprehensive, fair and honest! Clear skies!
999 subscribers! Congratulations in advance for 1k! Great content. Thanks for this review
Thanks! It is a milestone! Who will be the lucky one to win a free trip to Japan? (just kidding, of course)..... I am glad you liked the video!
I bought this telescope. I like it a lot! Excellent review, thanks!
Hey Keith, I am glad to hear it! Thanks for watching!
Delightful video
Also wanted a entry level refractor
And yes just purchased the sv48p
Clear skies
Thanks Panos. Maybe I should get a commission from SVBony!? Thanks for watching Astrophotography Japan! 😉
Very interesting to learn more about equipment! Nice moon shots as well. Maybe the only item I found find on the night sky.
Well, that's a start!
@@jpastroguy Thank you! Will keep on trying. But for now, the moon is a good thing to study. While my camera lens has a similar focal length as your telescopes, I think you got more details looking at the moon than I used to get.
@@matthiasharbers2533 That is probably because I am using a video capture and best frames stacking software. If you want to learn how to do that, I can easily show you.
@@jpastroguy Thanks a lot! Indeed, I am not stacking images normally, but it can help to improve resolution.
Another interesting uploading. Next step for visual observation could be “BINOCULARS”? As you know visual is not my main but interested in binoculars observation while shooting astrophotography.
Arigato......Perhaps some day I will get a binoviewer. That would be very helpful for some, especially people with eyesight deterioration.
You are SO the man! Great channel!!
You are funny. I am glad to know the videos are appreciated.
Very good and useful examination of the 48 , thanks! I purchased mine awhile back for the very reasons you explained so well! I tried the ST80 and found it not quite what I needed. I got the 48 “on sale “ for around $200.00 knowing I would upgrade in the future using it will help me decide on a future scope. I learned a lot from your examination and comparison which I think was brilliant. I will never part with the 48 even after “going bigger” I’m just wondering if I need the best (expensive) quality glass !
Hey Ronald, Thanks for the nice comments. I love tinkering with the equipment to learn more and discover capabilities. Funny that I started with slightly higher quality scopes and backed down into the SV48P. I love it and will even be using it tonight, too! I found that it does a surprisingly good job on Jupiter and Saturn, too. I was expecting a lot of chromatic aberration for such bright planets but I did not see that (in new UA-cam video I am working on). Regarding future scopes, I have been very satisfied with doublet refractor designs. Of course, I would love to have a triplet refractor, but I just don't feel the premium is worth it to my yet. Maybe someday. But even then, the SV48P will probably still be my go-to visual workhorse. Thanks for watching Astrophotography Japan.
Thank you for great video again !! Paul san !!
Thank you. It is a lot of effort, but I love making them! Last weekend I did some imaging in Shimoda. That will be my next video! Stay tuned!
@@jpastroguy Looking forward to it. I'm Japanese but living in Thailand since 2001 and now staying in Pattaya for 13 years . And restart stargazing 4 years ago at backyard. So I'm very much interesting Paul san's video. All The Best !!
@@sekitv Glad to hear it! I have not been to Thailand in many years, but love it! Please do keep in-touch!
Great Review! Thanks!
I appreciate the feedback; glad it was helpful. Thanks for watching Astrophotography Japan!
Excelente explicação, estava tentando achar um vídeo que explica a diferença e acabei de achar este, tirei todas minhas dúvidas. Obrigado.
É ótimo ouvir isso! Fico contente por o vídeo ter sido útil para si. Obrigado por assistir o Astrophotography Japan! Céu limpo!
Excellent video
I am glad it was interesting to you. Thanks for watching Astrophotography Japan! Clear skies!
Great video review
Thanks Dun. I appreciate the comment. And thanks for watching Astrophotography Japan!
Nice review! I also recently bought one of these (for visual only, so far so good). May I ask, what is the case/bag you're using? I'm trying to find something with a nice tight fit, yours seems to fit perfectly!
Hey Dean, I am happy to send you some information on the case. It was from AliExpress and very inexpensive. But that would be easier to communicate by email. Contact me at jpastroguy@gmail.com. Thanks for watching Astrophography Japan!
Very useful review. I've got an 8" Newtonian and a 5" Maksutov so the scope wouln't be the logical step up but it does give me a good idea what to expect from Svbony as a brand and may get me one of those SV503's at some point.
Hey Benny, thanks for watching. SVBony makes darn good refractors for the price. The SV48P was not a step "up" for me either, but a logical choice for some causal viewing nights on widefield targets........which is about all you can really do visually in the Tokyo metropolitan area. Clear skies!
Nice.
Thanks for watching!
Thanks for the great review. As the AZ-GTi mount seen in the opening of the video has a recommended weight limit of 5kg, can you please tell me what is the weight of the complete telescope setup you have on it in the video? If it doesn't exceed 5kg, can you please tell me if you have used an equipment setup on this mount that exceeds that weight? Thanks!
Hi John. The SV48P set-up at the beginning of this video weighs about 3500 grams. But if you watch one of my early episodes, like #2 - you will see that I am using the SV503 80ED scope with multiple accessories (ASIAIR, Guidescope, camera) on the AZ-GTi mount. This OTA set-up is close to 5 kg. To my surprise, I was able to do a lot of nice imaging on the AZ-GTi mount with that scope. In retrospect (now that I own the AM5), with that weight, the AZ-GTi mount is highly sensitive to wind and I would often discard 20 to 30% of the images due to mis-shapen stars or trails. So tracking and guiding works at close to 5kg, but I have never really exceeded 5 kg. With the AM5 mount, I now almost never discard a single photo based on tracking artifacts. I hope those comments help. Thanks for watching Astrophotography Japan!
@@jpastroguy Thank you for the detailed response. This is really helpful information and exactly what I needed to know! Cheers!
Hi ive heard alot o negatives about the focuser. Are they really that bad?
I have tried to tighten and adjust it according to instructions by SVBony. It helps but I could never get it as stable as my SV503 80ED scope. However, that little "slop" in the focuser is not a major problem for visual astronomy.....so I just live with it. When you tighten the focus lock, it secures the focuser very well and eliminates all the slop. So it works fine despite that issue. All-in-all, there are so many other good features of the scope for the price, that I still feel it is a good value for inexpensive visual astronomy. Even with 2x or 3x Barlow lenses in-line, the views of the planets are great with almost zero chromatic aberration......a testament to the fine flint glass optics.
Muito obrigado pelo vidio ..muita saúde e que danta LUZIA proteja sempre seus ólhos
Fico feliz por teres gostado do episódio. Céu limpo! Felicidades!
Nice review!
I'm both astro photo and visual guy same as you, and I'm using 20cm F4 Newtonian to observe galaxy in visual
I'm curious what can you see through 90mm FL500mm telescope for deep sky objects
Also interested in visual difference between SV503 80ED vs SV48P
Hi Satoshi, frankly I have only used the SV48P scope under the Bortle 7/8 skies of Yokohama. Here, I can just barely observe some globular clusters and maybe some glow of the Orion Nebula. Under these skies, you cannot see much DSO at all. I am taking the 48P telescope to a darker Bortle 4 site in a few weeks if the weather cooperates. I am hoping to test the limits of the scope for visual observing there. Contact me later in May, if you want an update on that experience. Best to use my email. Thanks for your interest in Astrophotography Japan!
@@jpastroguy Oh... the light pollutions...
I know even imaging can be done under light pollution, observation is so hard
I'm interested in further experience, so I'll contact you via email later
I want try the same camera on my SV48p but I'm a bit in the dark how to attach it. ( I will have also a SV226 )
So you have fixed the ASI533 with few extention rings, screwed to what, to plug into the 2" focuser ?
Do I need a focal reducer, field flattener ?
Greetings, at 16:02, you can glimpse my OTA set-up. So you don't actually need a field-flattener to use the camera. And frankly, there is no custom field-flattener or reducer-flattener which is designed for this telescope. Only higher-end ED-glass scopes that have optics designed for Astrophotography typically have FF/RF lenses. You could try another brand FF/RF, but it is not worth buying anything for this scope. With the IMX533 sensor, on the SV48P, you will not see much edge distortion; only a little . The sensor is fairly small. So, all you need to do is attach a a 2 inch nosepiece/ M42 adapter to the 11mm extension ring on the front of the 533MC camera. Thanks it! You can then draw-back the focus tube until you see sharp stars on your Preview-mode photos. The only reason I put extra rings and a filter drawer between my camera and optical tube was so that I did not have to extend my focus tube too far. Less is more stable and strong. Since you are not using any FF/RF, there is no back-focus distance requirement. Just find the focus point like you do with visual observations and you are good-to-go! I hope this explanation helps. Clear skies!
BTW, the nosepiece adapter is called a M42 T2 camera adapter.
@@jpastroguy They give a 1.25" T2 adapter with the camera so I must be fine ?.
Or do I really need a 2" T2 ??
If you can connect the T2 adapter to the M42 threads on your ASI533MC camera, you are fine. However, if you use a camera with a larger sensor, like a APS-C size sensor, you might get some image vignetting. The IMX533 sensor will work with the 1.25 inch nosepiece, however.
@@jpastroguy Nice, I guessed correctly. Thank you
A ocular e a Barlow da Svbony sao boas ou vc recomenda outras marcas e modelos que nao custem um Rim? Excelentes imagens as suas, parabéns 👏👏👏
Tenho os extensores focais 2x e 3x da Explore Scientific (ExS); são excelentes, mas caros. Não utilizei qualquer outra lente Barlow ou extensor focal. Penso que os extensores focais ExS têm pelo menos 4 elementos ópticos para um bom desempenho visual. Se a marca ExS for demasiado cara para si, eu confiaria na SVBony como alternativa. Sugiro que não compre nada com uma ampliação superior a 3x. As de maior ampliação não valem o investimento.
As minhas oculares são as Paradigm da Astronomics. São muito boas pelo seu preço (65 dólares cada). O mesmo modelo também pode ser vendido com outras marcas. Nunca utilizei uma ocular SVBony, exceto a ocular de retícula grande com mira (SV152). Essa é excelente. Mas não tenho experiência com outras oculares SVBony.
Independentemente da marca, o meu conselho é que compre uma ocular de 25mm e 10mm, e não uma inferior. Utilize o extensor Barlow / Focal para obter maiores ampliações. A visão é melhor e mais fácil dessa forma, em vez de uma ocular de grande ampliação.
Tradução por DEEPL.
Traduzido com a versão gratuita do tradutor - www.DeepL.com/Translator
@@jpastroguy aqui no Brasil essa ExS custa 1000 US$ mais 60% de imposto, mais caro que o meu telescopio, definitivamente não é para mim kkkkk...vou ter que me contentar com Svbony ou Celestron mesmo...obrigado pela ajuda e que Deus abençoe vc e sua família
Uau, isso é de loucos! Penso que se pode confiar na SVBony para ter um bom produto. Felicidades e céu limpo!
Bonjour, je visionne seulement aujourd'hui votre vidéo très intéressante sur ce réfracteur achromatique qui semble être de bonne qualité pour du visuel.
Quand pensez-vous pour de l'EAA avec une caméra Svbony Sv 705C ?
Vaut-il mieux démarrer pour de l' EAA avec un 503 Ed 70 ou 80mm?sachant que je suis un inconditionnel de l'observation visuel, mais que je désire me lancer dans l'EAA.
En début de vidéo (vers 3,5 mn) la lunette est montée sur une monture AZ- GTI mode Altazymutale, mais vous avez ajouté une barre de contre poids!
Pouvez vous m'expliquer pourquoi, est-ce pour rééquilibrer la monture afin d'obtenir un meilleur équilibrage et obtenir un meilleur suivi, ou vous avez une autre raison?
J'ai visionné d'autres de vos vidéos, et du coup, je m'abonne, car vos explications sont claires et limpides.
Bravo à vous pour cet excellent travail.
Mes bons voeux et souvenirs de France.
Bon ciel à vous.
Bonjour Jérôme. Merci d'avoir regardé Astrophotographie Japon. A 3:50, j'utilisais la monture AZ-GTi qui fonctionne bien et qui est bon marché. Cependant, elle tremble un peu dans le vent sous le poids d'un télescope aussi grand (je pense qu'elle est trop petite pour le SVBony SV503 80ED). Il est également léger et lourd latéralement si vous n'utilisez pas la barre de contrepoids. La barre permet d'équilibrer et de stabiliser la vue. Elle n'est pas nécessaire, mais je pense que c'est une bonne idée. À 10:50, j'utilisais la monture AM5 en mode AZ, qui est beaucoup plus massive et très stable, mais beaucoup plus chère. Franchement, si j'utilise une lunette lourde, j'utilise aussi une barre de contrepoids sur la monture AM5. Là encore, ce n'est pas nécessaire, mais c'est une bonne idée. Dans les deux cas, je ne pense pas que le contrepoids améliore le suivi, mais seulement l'équilibre et la stabilité. Je possède 5 télescopes......dont aucun n'est à triple lentille ; ce sont tous de bons instruments économiques. Je pense que si vous ne devez acheter qu'un seul télescope, le 80ED est le bon choix de SVBony. Cela, plus une bonne lentille de barlow 3x (oubliez la 2x). Le 80ED est suffisant pour tous les objets célestes, les planètes, le soleil et la lune. Et la qualité de l'image est excellente pour l'observation et "assez bonne" pour l'imagerie DSO (voir mon Instagram @ jpastroguy). En ce qui concerne la caméra SV705C, je suis désolé, mais je n'ai aucune information ou expérience à vous communiquer. Je suis enfermé dans l'écosystème des instruments ZWO pour le meilleur et pour le pire ( ?). Je vous souhaite bonne chance ! (Traduit par DeepL). 🤓
D'ailleurs, si vous voulez quelque chose de portable et de plus petit, je vous recommande un 60ED (Astronomics, autres fournisseurs) ou éventuellement un 70ED. Mais si vous utilisez le télescope principalement à la maison (pas de voyage), alors le 80ED est la meilleure taille. Au cas où vous ne le sauriez pas.......vous n'avez besoin d'un objectif accessoire réducteur / aplatisseur que pour la photographie (pas pour l'observation).
Bonjour et merci d'avoir pris le temps de me répondre, j'apprécie grandement votre geste.
Pour la barre de contre poids,je note l'intérêt de celui-ci,car utilisant un Mak 127 sur cette monture, effectivement, une fois monté sur la colonne,celle-ci penche légèrement du côté du telescope...je m'étais posé la question,et vous m'avez apporté la réponse...merci à vous.
Pour la lunette, j'hésite encore entre la 70 ou la 80 ed...mais votre réflexion quant aux possibilités de la 80...penche en sa faveur .
Dernière question, rencontrez vous des problèmes de connexions avec votre Asiair et la monture AzGti, car d'après les dires sur divers forums, cela fonctionne bien, et pour d'autres non??
Merci de vos retours de vos vidéos.
Bon ciel et bonne continuation .
I am glad you like the videos.@@jeromegabillat2349
Bom dia, comprei este telescópio Sv48P, preciso de sua ajuda para indicar qual ocular comprar pois estou começando agora e cheio de dúvidas.
Há tantas opções e a minha experiência é limitada. As duas marcas que possuo são destacadas no vídeo. Adoro a marca Paradigm da Astronomics, mas algumas pessoas podem não gostar da sua "forma de cabeça" invulgar. No entanto, têm uma boa relação qualidade/preço e funcionam muito bem. O meu melhor conselho é comprar apenas duas oculares; uma com cerca de 25 mm e outra com cerca de 10 mm de distância focal. E depois compre também uma lente Barlow 3x (ou Extensor Focal). Isso é suficiente. Lamento não poder ser mais específico; há demasiadas opções e não conheço a sua tolerância de preço. Felicidades!
Ok, muito obrigado.
Hi. Try the brands TMB planetary 9mm eyepieces. Also Starguider 18mm-25mm. They are excellent!
Starguider eyepieces are exactly the same as the Astronomics Paradigm eyepieces I recommended above. We agree on that!
Vou verificar as oculares indicadas e os preços, também vou precisar de Tripé, tem algum modelo que de certo para este telescópio que pode me indicar pois irá vir sem nenhum.
Domo
Do itashimashita!😉
Santa