Видео

Timely technique! Thanks for the comment!

Muchas gracias!

@AstroDNAObservatory a ustedes amigos y adelante con la bella astronomia

@@sushantacharekar it is a keeper! Thank you kindly for the comments. I'll be rotating back to refractor telescopes after I work Jupiter this month. I'll probably use my SVX090T for some dark sky trips and I'll put the AT115EDT up in the dome. It's always nice to experience the contrast of a refractor after months with a long focal length SCT!

Excellent suggestion - thank you. I want to revisit this topic, I'm actually not happy with my flat frame for this target data. Cheers

My pleasure! I'm glad you enjoyed the video. The Stellarvue is a wonderful instrument with outstanding optics. I look forward to working it more with a full-frame sensor. Cheers!

THANK YOU! YOUR PRESENTATIONS ARE SIMPLY AWESOME! I WILL NOT COMMENCE MY ASTRO IMAGING PURSUITS WITH A DEDICATED AP CAMERA UNTIL AROUND MID 2026. I AM CONSIDERING A ZWO ASI2400MC PRO OR AN ASI2600 DUO. MIND BY THE TIME I AM READY TO PURCHASE THE EXPENSIVE DEVICE, THERE WILL NO DOUBT BE A NEW GENERATION AVAILABLE WITH EVEN MORE SPECTACULAR TECHNOLOGY. AS A NEW ASTRONOMY ENTHUSIAST WHO QUICKLY FELL IN LOVE WITH THE VISUAL ASPECT OF THIS FABULOUS HOBBIE, I AM IN NO DASH TO START SHOOTING WITH AN EXPENSIVE CAMERA. RATHER, I WILL TRY MY HAND AT IMAGING WITH MY BRAND NEW CANON 90D. THIS NEW PASSION IS FOR LIFE, SO I HAVE DIVED RIGHT IN AT THE DEEP END AND HEAVILY INVESTED IN A "SKY ROVER 130 REFERENCE REFRACTOR" FROM A RETAILER CALLED ASTRONOMY ALIVE HERE IN AUSTRALIA. IT HAS A FOCAL LENGTH OF 920MM AND CARRIES DECENT APERTURE AT 130MM. SADLY, IT HAS COST ME $6400 AUSTRALIAN BUCKS WHICH MEANS IT REQUIRES AN APTLY CAPABLE MOUNT TO ACCOMMODATE IT. DUE TO PORTABILITY AND FLEXIBILITY, I HAVE DECIDED THE SKYWATCHER WAVE 150i WILL BEST SUIT MY INTENTION TO ENJOY MY HOBBIE WHEN ON A TRIP IN ADDITION TO APPRECIATING MY VISUAL JOURNEY FROM HOME. IN JULY OF 2025, I WILL PURCHASE A BRAND NEW CELESTRON 9.25 EDGE HD TO COMPLIMENT MY REFRACTOR, SO I CAN ZOOM IN ON PLANETS WITH MY FAVOURITE BEING SATURN AND JUPITER. I AM EXCITED BEYOND BELIEF! AFTER QUICKLY BECOMING SUPER FRUSTRATED WITH MY FIRST TELESCOPE IN 2020 THE "STARSENSE CELESTRON DX130MM", I DECIDED TO BITE THE BULLET AND "PROPERLY INVEST" TO A CONSIDERABLE SUM AS TO AVOID ANY FUTURE DISAPPOINTMENT-I AM ABSOLUTELY DELIGHTED WITH SUCH A SENSIBLE DECISION BECAUSE I EXEPCT NOTHING SHORT OF DAZZLING VIEWS OF PLANETS IN FULL HD COLOUR THROUGH MY NEW HIGH-END SCOPES. IN THE FIRST HALF OF 2026, I WILL BUY A STELLARVUE SVX 90T WHICH WILL "COMPLETE" ALL OF MY ASTRO REQUIREMENTS FOR MY FUTURE JOURNEY THROUGH SPACE. TOURING THE NATURAL WONDERS OF LIFE IN DETAIL WITH HIGH CLARITY, WILL PROVE AN UNFORGETTABLE EXPERIENCE CREATING EXQUISITE MEMORIES THAT LAST FOREVER. WITHOUT A SHADOW OF DOUBT, ASTRONOMY HAS CHANGED ME AND PROVIDED AN UNIMAGINABLE IMPROVEMENT TO MY TIME HERE ON PLANET EARTH. I AM SUPER GRATEFUL AND THANK MY LUCKY STARS TO HAVE FOUND THIS ASTONISHING NEW INTEREST, EVEN IF IT MEANS MY BANK ACCOUNT WILL TAKE A HIT IN THE SHORT-TERM. I AM OVER THE MOON TO HAVE SUCH A FABULOUS KIT FOR A BEGINNER TO THIS EXTRAORDINARY WORLD OF DISCOVERY AND NEW HORIZONS . . . . I MIGHT BE 45 BUT I FEEL LIKE I AM IN MY PRIME SINCE I FOUND ASTRONOMY, OR PERHAPS IT FOUND ME! HA, HA, HA, HA, HA . . . . . MY EYEPIECES ARE; 1). EXPLORE SCIENTIFIC 6.5MM 52° 2). CELESTRON LUMINOS 7MM 3). CELESTRON LUMINOS 10MM 4). CELESTRON LUMINOS 15MM 5). CELESTRON LUMINOS 23MM 6). MASUYAMA-FULL SET 7). BAADER MORPHEUS-FULL SET 8). TELE VUE PANOPTIC 24MM 9). TELE VUE DELOS 10MM 10). TELE VUE ETHOS 13MM 11). TAKAHASHI 3.3 TOE 12). PENTAX XW 40MM 13). EXPLORE SCIENTIFIC 4.5MM 52° 14). SAXON CIELO 2.3MM THANK YOU DEAR FRIEND AND ENJOY THOSE DAZZLING VIEWS!

Thanks for the comment! I have not tried an artificial star, though I have seen videos of folks doing so. One of the tricky aspects of the SCT is the tendency of the mirror to shift and flop when slewing to your target. So, when I collimate, I try to do it after the slew. Cheers!

Thank you for the comment and I love the C11! I originally intended to use it strictly for planetary, but I am very pleased with the performance on DSOs. I'll be imaging Jupiter in November, I have a ton to learn about planetary - but I continue to grab other targets with my C11 during clear skies. All the best!

@@PaulHirschhorn Warwick, NY - about 65 miles NW of NYC. Cheers!

Hey - thanks for the question. Mono CMOS cameras can be binned - at least that is the case with all my ZWO pro cameras. I use NINA for my sequences and it is an option in the Equipment and in the Imaging screens. You can't bin Color CMOS at the hardware level due to Bayer matrix - you would not be combining pixel signals properly. Cheers!

Thanks for the comment!

Morning, Steve. I don't fabricate caps at this time. But I am familiar with your pain! I'll keep you posted if I do eventually create caps for these telescopes. Thanks so much for your support!

Binoculars are my favorite tool for observing. I would never have been able to see the comet without them. Once I had it located and my eyes acclimated I couldn't help but see it the rest of the session. Even my wife was able to spot it. Cheers and thanks for the comment!

Awesome Larry! Not so awesome on the neighbor's lights... I wonder why Seestar doesn't locate the moon or planets? Cheers.

Got to see it tonight and captured a couple of grabs with the Nikon!

I bet it would look awesome in a 80mm refractor... Thanks for sharing!

No click-bait here... The time lapse starts around 2:07 mark and I repeat it twice. Which the head of the comet move closer and closer to the stars in the lower left corner. It is gradual - each second represents about 15 seconds of time. There are a total of 60 frames. On tablets, computers and TVs it is fairly obvious - it is a little tougher on a mobile phone. Cheers!

@@AstroDNAObservatory Fair enough. This thing travels slooow! Can you video a faster comet next time? Lol

Will do!

I hope your skies clear in time to get a glimpse at this interloper! Tonight I was able to image it with my Nikon and it was much clearer in binoculars. Once my eyes adjusted a bit I was able to see it with averted vision - even my wife saw it with the naked eye! I just posted a couple of pics in the community tab. Cheers!

You could stack in DSS using comet stacking mode.

Siril also has comet stacking options that you can investigate. You can register your frames against the comet itself, or the stars, depending upon your desired result. I registered on the stars and then, rather than creating a single stack, I used the "export sequence" option to generate and animation of the comet traveling through a fixed star background. Cheers!

Thanks Greg - I just checked my tutorial playlist to see if I published it there. I thought I did a video on the actual manual pre-processing with Siril for mono workflows - I was wrong. I did a very rough high-level discussion on calibration frames, but nothing on the actual Siril workflow (video link: ruclips.net/video/Dv_xhYwf-qQ/видео.html) . Apologies. I am presently preparing a video on pre-processing calibration frames for OSC cameras, in that video I am highlighting the differences between Mono and OSC workflow settings. I am about a week out before that is released. I'm trying to get some good comet data while the skies are cooperative! Won't be long!

@@AstroDNAObservatory Thanks, I'll watch for that. I did find another video on the topic. If I could give one piece of constructive criticism without giving offense (Especially as I have not watched a lot of your videos yet) I find myself in the middle of a process and looking for a quick explanation of a particular process or step and having to wade through several 20 min. videos, waiting for multiple ads to play, to get a 3 or 4 step process that could have been explained in 2 or 3 minutes. The long versions are usefull to get a full understanding of all the otions and reasons. But a cut down quick reference version would be very nice to have if you could make a second version in the editing process.

@@greglisk9408 very fair feedback! I tend to ramble a bit, mostly because I am very often reinforcing my own understanding of the material when presenting. I get the same feedback from my adult children when we are discussing software architecture! Will eventually find the right balance. Cheers - and if you are in the North-East, be sure to get a glimpse of the comet!

@@AstroDNAObservatory I'm actually trying to learn to stack with Siril because I'm processing Comet images. I usually just stack with ASIStudio then process in Siril. But ASIStudio doesn't have the tools to properly stack comet shots.

ruclips.net/video/apniCigybsI/видео.htmlsi=O02iTfcu3ZAFN-qu video I did on Comet Kushida - I may have a discussion on my stacking technique...

@WilliamHurley-z7d - Hi, William. Just shoot me an email at dna.oneill@streamingrelativity.com and I'll coordinate with you. Cheers!

@@LuisOmiBarbosa thank you! Working on one covering pre-processing OSC calibration frames now. Cheers!

Thanks for the comment. Oddly there is very little content on this camera. Glad it was helpful. Cheers!

Thanks for the comment and suggestions. I am working to complete a website with blog entries and tooling, which will feature this journal template and more. Before the end of the year I should be up and running and will do a video launch sharing those resources with the community. In advance, I built the journal template in word and I combine data from several sources to create a record of the session. This journal entry sits next to the full page printout of the image. I include seeing, lunar cycle, sky charts, rig profile, integration data as well as my notes as a historical record and background for folks who browse my journals. Cheers!

Thank you very much! This image was captured, along with about 10 others, as an experiment using the C11 XLT at F/10 (no reducer/corrector) with a full frame sensor. All of which goes against conventional wisdom! I think the lesson is that you can try all sorts of combinations and get all sorts of results! Would I have better data with an EdgeHD - YES. Would I have less aberration with a reducer/corrector - YES. Is this image of Pacman still awesome - YES (IMHO). Thank you for the comment. Cheers!

@@AstroDNAObservatory absolutely agree on all points, the image turned out beautifully, after all the point is to have fun, not limit ourselves and confine our thinking to what the current cloudynights or astrobin consensus is. Onwards & upwards!

@@AstroDNAObservatory I have a 11''Edge HD that I really haven't used for imaging and I have the reducer. I mainly use a modified DSLR. I think i might try this object. would you advise me to use or not use the reducer the first time. I bought the 11'' EdgeHD back in 2013. but quickly learned I was out of my depth for AP, bought a smaller AT65EDQ and stared to learn on that. I mainly use the Celestron for visual but this makes me want to try it out for AP

Thanks, Luis - excellent news on the RASA 8. The image of the busted corrector plate made me cringe! Clear skies neighbor!

Cheers, Kevin! I own an Optolong L-eXtreme, which is a duo band (Ha and Oiii). It is similar to the Askar D1. I found it to perform similarly. I keep it loaded in the wheel with the Askar set and occasionally shoot both eXtreme and D1 to compare. See you on the broadband video!

Thanks for the comment, Rob. I'll incorporate the SIRL preprocessing for OSC in my next video. I am likely going to use globs and/or galaxies as the target subject. Cheers!

Good to hear from you, Greg! Thanks for the comment. The clear night stretch in September was pretty awesome - very lucky and glad I had the energy to hit all the targets I did. I like these Askar filters and look forward to imaging with them some more... Cheers!

It's a beast to mount - so once deployed, I like to image for a few months before swapping back to one of my refractors. I truly enjoy all my rigs. Each is unique and delivers its own experience. Thank you for the comment!

@@AstroDNAObservatory your welcome. I sure would not mind viewing with a c11 for a while.

@@AstroDNAObservatory I know what you mean about beast to mount. I had a 10 inch SCT many years ago and it was heavy also. And viewed with a C11 and C14.

Thank you kindly!

Thank you, Paul. Glad it helped!

I did a nice mosaic on the JellyFish Nebula, with several nearby open star clusters and an adjacent reflection nebula using the AT115EDT and the ASI2600mm pro. I did a multi-part video on that experience. I really need to redeploy that rig and gather MUCH MORE data. Mosaics can be alot of fun. Cheers!

Thanks for the comment. I generally do my collimation with a sensor, but it can be done through the eye-piece as well. The diffraction rings are always present, but seeing will affect appearance. Love the little SCTs - super portable, good bang for the buck... Cheers!

I've never owned a Maksutov variant - sounds like you are having good fun with it! I own two 1600mm pro cameras, purchased both used over the years, quite a work-horse! Nice pairing for the rig... Cheers and thank you for the comments!

I really enjoyed capturing this target and making that video! I have a number of different videos that are essentially "astronomical tours". I have 10 images in the queue to produce. I hope you enjoy them all! I have a C8 as well, with the Celestron reducer/corrector. I have had my eye on the Starizona product, I hear good things about it. Yes, annotating an image can be done in Pixinsight. You may need to run Image Solver as a first step. Once that coordinate data is associated with your image, you can generate an annotation overlay - or a new image with annotations incorporated. Enjoy that scope!

Thanks for the comment - I was not aware of the Optec Fastfocus system - pretty cool. Cheers and thank you for sharing this information!

Gracias, Jose. Creo que si, puedo hacer uno para el telescopio Meade ACF de 14". dna.oneill@streamingrelativity.com y podemos discutir los detalles. Saludos!

Thanks for your comment. I agree, image scale is most important - the ASI2400MC pro has 5.9um btw, not 5.4. However, there are challenges to long focal length, high focal ratio, astrophotography independent of image scale, which I do speak to in this video. Undoubtedly, there is much more to discuss on this topic, and others, and I'm sure I will cover them in future videos. Side note, your 9um pixel camera paired with 6800mm focal length yields an image scale of .27 arc-sec per pixel. I don't know anything about your seeing conditions, but if I assume perfect seeing - you must be using a rig with 18+ inches of aperture. I'm jealous! Cheers.

@@AstroDNAObservatory i think I mentioned that I use binning 2x2. Image scale is twice more. I wrote about aperture as well 1 meter. As far as seeing conditions are concerned, according to Nyquist sampling theory, 0.54”/pixel supports lesser than 1.5” seeing. Yeh, I get it in Chile. 5.9um is even better. What are eccentricity and FWHM of your integrated files? My guess eccentricity could be 0.5-0.65 and FWHM 2.5” and above. Right?

Ah, yes binning 2x2 makes a difference. 1 meter aperture? What scope do you have? And, yes - that FWHM guess is about right. I typically see FWHM values for my stacked data in the low 2's to 3 range - at least with this rig. Chile - awesome! Some day I will make a trip there. Best!

@@AstroDNAObservatory I don’t own such scope, I rent it time-to-time. FWHM is usually 1.2-2.2” for that scope (price for rig is 750K+). You get 2.2-3.2” (price for rig is 8-10K). On my home rig with 10” scope, I get 1.5-2.5” (price 17-20K). If my rig was in Chile, I could easily pull 1.2-2.2”. So, why people bust themselves to get big scopes? It is not about resolution. It is all about sensitivity- SNR. So, if you had scope with F of 5, the same aperture, camera with small pixels and proper mount, dark location and top seeing; you could get the same resolution as that 1m-scope . Increase aperture twice, resolution will not change but SNR will go up, and pictures will be well better, since you will have a lot of room for stretching.

@@anata5127 well stated... Cheers!