Would this lens be great for night star shots? It focuses to infinity correct?

I just got this lens for astrophotography and decided to see if I could find where it focuses the sharpest when capturing stars. I took a series of shots with the focus set as far into infinity as it could go, then I backed it off about 1mm for each shot (at ~30 seconds shutter speed) while the focus ring was inside the infinity line. After reviewing the shots in Lightroom, I honestly can't see much of a difference in sharpness between the shots. The scene included a well lit object about 1 mile away and a generous portion of the Milky Way as well as Sirius and Canopus, and even zoomed in all the way, the stars and the lit object have about the same amount of sharpness through the series of images. I plan on duplicating this setup but at a shorter shutter speed to see if I can spot a difference, but so far it seems sharp in the whole "infinity" range. This blows my Canon 28mm f/1.8 out of the water completely for astrophotography (at a savings of ~$200). The Canon is fairly useless over f/2.8 anyway because you get a ton of coma around the edges of the image, so the wider aperture doesn't help. The Rokinon has no noticeable coma at the edges at f/2.8 either.

I am very interested in this lens, will it fit my Canon Rebel T3?

Sure it will fit the Rebel T3 - keep in mind that this is a manual focus lens, but a very sharp lens

Is this lens good for star photography?

Yes! It’s manual focus so I suggest using your led screen and led zoom function to get sharp focus of a star or planet. Screen mode or whatever it might be called on your camera. I’ve had good results and astrophotography is what I bought this lens for specifically.

Package Dimensions L x W x H	17.9 x 13.2 x 13 centimetres
Package Weight	0.75 Kilograms
Product Dimensions L x W x H	8.7 x 8.6 x 8.6 centimetres
Item Weight	552 Grams
Brand	Rokinon
Camera Lens	The Rokinon 14mm F/2.8 IF ED UMC Aspherical Ultra Wide Angle Lens for Canon offers an impressive 114-degree field of view on full frame cameras and 93.9 degree on APS-C cameras. It features 14 elements in 12 groups, including 2 ED lens elements, one hybrid aspherical element, and one glass aspherical lens element. This manual focus lens is designed for full frame cameras but also works on APS-C sensors, providing a wide angle view with minimal distortion. It is compatible with Canon EF mount cameras.
Colour	Black
Country of Origin	Republic of Korea
Has image stabilisation	No
Included components	14mm f/2.8 Ultrawide-Angle Lens for Canon DSLR
Lens Fixed Focal Length	14 Millimetres
Max Focal Length	14 Millimetres
Min Focal Length	14 Millimetres
Model year	2014
Plug profile	Canon EF
Part number	FE14M-C
Size	14mm
Zoom Type	motorized zoom
Lens Design	Prime
Maximum Aperture Range	F2.8
Focus type	Fixed Focus
Aperture Modes	F2.8-F22
Style	Canon
Guaranteed software updates until	unknown

Rokinon FE14M-C 14mm F2.8 Ultra Wide Lens for Canon (Black)

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