\nI managed to get one of the demo models from First Light Optics<\/strong><\/span>\u00a0to try it out.<\/p>\n
What is a Smart Telescope?<\/strong><\/span> All good stuff! Specifications of the SeeStar S50. What’s it like? The case has a better feel than I expected, but not of the same quality as the Vespera’s and Unistellar’s, but hey, it is a lot cheaper.<\/p>\n It is very compact and the tripod screws onto the 3\/8″ thread on the bottom. The App.<\/strong><\/span> All installed OK and I switched the SeeStar on and was ready to play. As an aside, I was also able to turn on Station mode and connect it to my home WiFi. Clicking on the top part of this screen brings you into the SeeStar Settings. To turn off the SeeStar, you need to scroll down the bottom of this menu, as it is below the intial screen<\/p>\n Once all connected, I clicked on the StarGazing button.<\/p>\n By clicking on the image of The Plough, I went into the map and searched for the Veil Nebula. The SeeStar takes an image, looks at the position of the stars in the image and works out where it is pointing by plate solving, then corrects its position if required. No user intervention is required.<\/p>\n If the framing isn’t quite to your liking, you can move the background sky underneath the rectangle to reposition the camera.<\/p>\n Comet 2023 H2 (Lemmon) was in the database, and it went to it, and managed to image the comet, but I could not get a very good image, as the comet was moving too fast.<\/p>\n Clicking the button top left, brings us out of the map back into the Stargazing window.<\/p>\n Once it has settled on the chosen object, it will be continually previewing. Depending on which object you have selected, you may want to use the dual band filter to get better contrast of the nebula. The image can be brightened or dimmed down by using the Adjust button, which changes the gain of the camera.<\/p>\n You are not able to adjust the exposure, I’ll mention more about that in a bit.<\/p>\n The AF button is the autofocus, which can be used if the autofocus hasn’t already worked.<\/p>\n The circle in the middle can be used to move the Seestar in any direction manually. Taking an image.<\/strong><\/span> The SeeStar now takes a series of exposures, which it will add together at the end of the “exposure”. Here’s where some of those limitations I mentioned start to kick in.<\/p>\n The SeeStar is on an Alt-azimuth mount. As a result, as the sky rotates above (Oh, OK, as Earth rotates under the sky), the image will rotate in the field of view. This can be easily noticed in how the orientation of Orion rises and sets leaning in different directions.<\/p>\n As the imaging chip is set and cannot rotate to match this rotation, as the SeeStar tracks the sky, the image falling on the chip is rotating. This will produce trailing.<\/p>\n The rotation of the images does produce some artefacts around the edges of the images, which gets worse the longer the exposure.\u00a0I went up to 15 minutes for some exposures with one object, which went really well. This is shown in this image on the right, which I stacked from a few SeeStar Subs to show the image rotation.<\/p>\n How does the SeeStar cope with all this to produce a nice image? Each sub image that the SeeStar takes is rotated and aligned on the star positions on the images to stack them together. Added to this, another problem is that the SeeStar is not tracking the sky accurately. It can’t.<\/p>\n As an astrophotographer I am so used to equatorial mounts and autoguiding to get really good results, but these smart scopes work totally differently.<\/p>\n Between each image, the SeeStar takes an image to check whether the object is located on the imaging chip and adjusts the position of the scope, if necessary.<\/p>\n The image below is The Pleiades image created by SeeStars by stacking a number of 10 second subs together. That’s enough about how it works, you really want to know what are the images like. The Sun & crescent Moon in a bright morning sky. The Sword Handle in Perseus, The Cygnus Wall and The Crab Nebula. Three parts of the Veil Nebula in Cygnus. Messier 33, Bubble Nebula and Messier 52, The Crescent Nebula.<\/strong> The Orion, Horsehead and Elephant trunk Nebulae.\u00a0<\/strong> Something I really was not expecting was to point it at Uranus and be able to reveal two of its Moons, Titania and Oberon. My Conclusion.<\/strong><\/span><\/p>\n I found the SeeStar S50 very easy to use and anyone wanting a highly transportable imaging system, it does produce very pleasing images. More seasoned astrophotographers and pixel-peepers will poo-poo these devices, as they don’t produce the best quality images. It won’t appeal to everyone, but the SeeStar far surpassed all my expectations, and is an amazing bit of kit that really impressed me.<\/p>\n As long as it attracts more people into our amazing hobby, especially the younger generations that are used to doing everything on their phone, that has got to be a good thing.<\/p>\n Can the SeeStar S50 be improved?<\/strong><\/span> If they had a way that the imaging chip could be rotated, this would allow you to rotate the imaging chip to get the framing you want. Some people have speculated if ZWO are working on producing a longer focal length version.<\/p>\n A longer focal length telescope will give a smaller field of view and a higher magnification. Have an imaging chip that rotates as the exposure is taken or an equatorially mounted version would allow it to take much longer exposures without image rotation problems showing.<\/p>\n Either of these would be a real game-changer and if that does transpire, I reckon we are seeing a glimpse of the future of astrophotography.<\/p>\n Improving SeeStar Images.<\/strong><\/span> I found I was able to get quite a bit more out of the images using my normal image processing methods.<\/p>\n The SeeStar has two folders for each image subject it takes, such as M42 and M42-sub. The following images were produced by processing the raw final stacked images using Affinity Photo. With some of the subs, I was not able to stack these.
\nUsing an app on a smartphone or tablet, you connect to the scope and send it to the object you want to image.
\nIt then takes an image for however long you want… (But see below).
\nAt the end of the exposure, the software processes the subs taken and the processed image is uploaded straight onto the smartphone or tablet being used.<\/p>\n
\nBut be aware that there are a number of limitations, which I’ll discuss later.<\/p>\n
\n<\/span><\/strong>50mm aperture, triplet apochromatic optics should give relatively low chromatic aberration.
\n250mm focal length. Gives a field of view just over 1\/2 a degree left to right. Enough to fit The Moon or Sun in.
\nImaging chip IMX462.
\nResolution 1920×1080.
\nDew Heater built in.
\nDual Band Nebula Filter.
\nSolar white light filter supplied.
\nAlt-Azimuth mount, with built in WiFi and Bluetooth.
\nBattery life, up to 6hs. Less with the dew heater on.
\nWeight 3kg.<\/p>\n
\n<\/strong><\/span>The SeeStar S50 is supplied in a very nice lightweight expanded polystyrene case, which ideal for travelling.<\/p>\n
\nThis common thread will allow you to attach the SeeStar S50 onto many other, bigger and more stable tripods, if needed.<\/p>\n
\nI downloaded the SeeStar App from the Andriod Play Store. It is also available for iPhones and iPads as well.
\nWatch out for the minimum specifications of phone and tablet that can be used with it.<\/p>\n
\nI connected my phone to the WiFi on the SeeStar and opened the app.
\nAfter a setup routine, by pressing a button on the SeeStar and rotating it a few times, I was connected and ready.
\n![\"Screenshot](\"https:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/Screenshot_20231105_215045_Seestar-1.jpg\")
<\/a><\/p>\n
\nThis allowed me to connect to the SeeStar from anywhere inside the house.
\nNo more standing out in the cold for me operating a telescope.
\nAfter all, I am getting to that age where I need to keep myself warm!<\/p>\n<\/a><\/p>\n
\nIt found a number of entries for this, so clicked the Gazing button next to The Witches Broom and the SeeStar obediently went to it.<\/p>\n<\/a><\/p>\n<\/a>The SeeStar has been set so that the camera chip is set to give a portrait image, rather than landscape. This cannot be changed. I guess ZWO did this so that the image format fits popular sharing apps, such as Instagram, so images can be shared easily.<\/p>\n
\nSome stars or bright objects should be visible on the screen.<\/p>\n
\nClick on the Filter button and the filter moves across the camera and will be highlighted in green.<\/p>\n
\nThis control does take a bit of getting used to. I’d prefer up, down, left, right buttons and a speed control myself.<\/p>\n
\nTo start the exposure, or as the SeeStar calls it, “Enhancing the image”, click the red button at the bottom of the screen
\nThis takes a minute to start.<\/p>\n<\/a><\/p>\n<\/a><\/p>\n
\nIt takes very short exposures of 10 seconds, which minimise the amount of trailing visible in the image.
\nThis is why you are unable to adjust the camera exposure. Longer exposures will start to show trailing.<\/p>\n
\nAs the images stack up and are added together, fainter objects gradually brighten and more detail is revealed on the screen.<\/p>\n
\nThe centre image is one of the raw subs it took.
\nIn the right-hand image I have taken a number of the subs it took and created a stack without aligning each image on the stars.
\nAs you can see it’s a right mess. It reveals just how much the SeeStar moves between each sub.
\nThe SeeStar has coped admirably with the rotation and this to produce the final image.<\/p>\n<\/a><\/p>\n
\nAs well as some bright targets, I deliberately chose others that should challenge it a bit.
\nThe first set of images below are as they were produced from within the app.
\nI’ll show later how the images can be further improved.<\/p>\n
\nS<\/strong>eeStar finds these itself, but make sure you put the solar filter on when pointing at the Sun.
\nThe Moon could not be found in the bright twilight I tried, but I could use the on-screen controls to get it in the field of view and adjust the image brightness to match what I wanted to capture.<\/p>\n<\/a><\/p>\n<\/a><\/p>\n
\n<\/strong><\/a><\/p>\n
\n<\/strong><\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n
\nThat shows it has really good optics.<\/p>\n<\/a><\/p>\n
\nI did encounter a couple of finding and tracking issues, but generally it did behave itself.
\nIt could not image around Jupiter, as the flare from the planet swamped the image, so it could not pick out any guide stars.
\nAnyone would be loving the results it can give them just using their smartphone or tablet, even on their first night.
\nIt’s so simple to set up and use, without all the faff normally associated with astrophotography and all its complications.
\nFor a single cost, it’s ready to go and most importantly works most of the time.<\/p>\n
\nBut for this cost and such convenience, it is after all aimed to appeal to the beginner who wants a convenient way to catch images of our universe.<\/p>\n
\nI’m sure as ZWO develop the software to manage the captured data, the images can only get better (See my processing results below).<\/p>\n
\nIn many cases you will find that the object you are trying to image will not lie in the correct orientation to make a nicely framed image.
\nA couple of hours can make a big difference in the orientation of the object, so that is something to consider when taking an image of a particular object.
\nA mosaic feature would also be quite nice to capture wider parts of the sky.<\/p>\n
\nThis would show up the sky rotation a lot quicker than 10 seconds, limiting the exposure length even further.<\/p>\n
\nThe SeeStar has an option in the menu to save the raw data it takes in its memory. These are saved as fits files.
\nIf you have the SeeStar networked, or connected to a computer with the supplied USB cable, you can browse to the folder called “EMMC Images\/MyWorks” where these files are stored and transfer them to a computer to stack and\/or process them yourself.<\/p>\n
\nThe finished stacked image (but not processed) is in the subject folder.
\nThe Subject-sub folder contains the individual 10 second subs that were taken and used to create the stacked file in the other folder.<\/p>\n
\nThe images as produced by the SeeStar S50 uploaded to the phone is on the left, my processed images are on the right.<\/p>\n
\nThe stars on the images were too faint for the stacking software to detect enough for it to stack them.
\nLonger enhancement runs may get round this problem.<\/p>\n