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Description
Lunt LS50FHa Front Mount 50mm Double Stack Solar FilterLS50FHa 50mm Front Mount H Alpha Solar Filter A 0. 4 tilt tuned etalon for two purposes: double stack upgrade for the Lunt LS60MT, or standalone H alpha filter for compatible customer refractors. Now with new generation etalons every unit individually tested on Lunt's precision metrology equipment. Every specification is verified, not estimated. The LS50FHa is a 50mm aperture front mounted tilt tuned H alpha filter with a verified bandpass of 0. 4. It
LS50FHa — 50mm Front-Mount H-Alpha Solar Filter A 0.4Å tilt-tuned etalon for two purposes: double-stack upgrade for the Lunt LS60MT, or standalone H-alpha filter for compatible customer refractors.
Now with new-generation etalons — every unit individually tested on Lunt's precision metrology equipment. Every specification is verified, not estimated.
The LS50FHa is a 50mm aperture front-mounted tilt-tuned H-alpha filter with a verified bandpass of 0.4Å. It serves two distinct purposes — as a double-stack etalon for the Lunt LS60MT Modular Telescope, or as a standalone H-alpha solar filter for a customer-supplied compatible refractor.
As a double-stack filter for the LS60MT: The LS50FHa mounts to the front of the LS60MT in night configuration, placing its 0.4Å tilt-tuned etalon in series with the LS60MT's internal 0.45Å pressure-tuned etalon. Combined system bandpass: <0.28Å. No factory visit required. The filter is easily removed for night-sky use.
As a standalone H-alpha filter for customer refractors: The LS50FHa retrofits a compatible customer-supplied ED refractor for daytime solar observation and is easily removed for night use. A Lunt blocking filter must be used at all times — this is a safety requirement. Select the correct blocking filter for your telescope and intended use:
- B600 — visual use on telescopes up to 540mm focal length
- B1200 — visual use up to 1,080mm / imaging up to 540mm focal length
- B1800 — visual use up to 1,620mm / imaging up to 1,080mm focal length
If you are looking for a complete standalone H-alpha solar filter package including a blocking filter and adapter, Lunt offers complete 40mm and 50mm filter packages that include both —see the LS40FHa and LS50C product listings at: luntsolarsystems.com/collections/front-mounted-etalon-systems
Specifications
- Model: LS50FHa
- Optical Aperture: 50mm — no central obstruction
- Tuning: Tilt-tuned
- Single Etalon Bandpass: 0.4Å — individually verified
- DS Combined Bandpass: <0.28Å — LS50FHa (0.4Å) + LS60MT internal PT (0.45Å) in series
- Compatible With: Lunt LS60MT in night configuration; compatible customer ED refractors
- Blocking Filter Required: Yes — sold separately
- Weight: ~2 lbs (~1kg)
- Storage: Aluminium hard case with fitted foam
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 2081 reviews
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Product Reviews
★★★★★ 5
Worth The Money !
Been so many years ago I bought new Dinnerware, not sure how long?
But very pleased with this set! and the price!!
Packaging was great! No broken pieces.
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Reviewed in the United States on March 4, 2026
★★★★★ 5
Great Starter Knife Set With Everything You Need
Size: 9-Piece, Style: Traditional Handle Design
5/5 stars for the Amazon Basics High Carbon Stainless Steel Knife Set. I have been really impressed with this set overall and it has handled pretty much every kitchen task I have thrown at it so far. Right out of the box the knives were insanely sharp and felt much higher quality than I was expecting for the price.
One of the biggest pros is the variety of knives included. It comes with basically every knife you would need for normal cooking and kitchen use which makes it a great all-in-one set. The knives also have a really nice weight to them and feel balanced in the hand instead of feeling cheap or flimsy. The grip is nice as well not slippery and while using it I feel like it stays put in my hand. They have held up well with regular use and have been easy to clean after cooking. The high carbon stainless steel has also done a good job resisting rust and staining which is important for a set that gets used often.
Another nice addition is the included honing rod which helps maintain the edge and keep the blades performing well over time. I did notice that the edge on the knife I use the most has started to wear down a tiny bit after extended use, but that is expected with pretty much any frequently used kitchen knife and can usually be maintained with regular honing.
As for cons, the wooden knife block is nice looking but I could see it potentially cracking over time if it is not taken care of properly or exposed to too much moisture. Other than that, I really do not have many complaints with this set.
Overall I think this is a fantastic knife set for anyone who just moved out and needs a complete kitchen setup or for someone wanting to replace an older worn out knife set. I actually gifted a set to my in-laws already and they have been loving it as well. I would definitely recommend it.
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Reviewed in the United States on May 28, 2026
★★★★★ 5
Good For Living On The Edge
Size: 9-Piece, Style: Traditional Handle Design
It was past time to replace my dollar store chef knife with a decent set with a bread knife and no steak knives. I first looked at Wüsthof as I always liked that brand, but never owned any. I used a borrowed paring knife for a while and was impressed with the quality. My line cooking time is over and though I would have liked to have a set of forged Wüsthofs, the price was too much for occasional use. My favorite chef knife was a 10" wide Victorinox/Forschner until it got stolen. I replaced it with an 8" version, but it was not wide and felt very different. Still my first choice for stamped high-carbon stainless steel blades. Again, the price for a set was a bit high for use once in a while.
I spotted the Amazon Basics 9-Piece Premium Kitchen Knife Block Set. Wait. A forged high carbon stainless steel knife set for that price? I read through all the reviews even the one with the picture of the broken knife, the set seems to be a good buy. Certainly better than a dollar-store knife and a few dollars more than an empty knife block.
While I haven't given them a good workout on food yet, I can tell they are very good given the price. I would have liked the chef's knife to be a bit wider, but I can live with it as is. I tried the index finger and thumb holding test on the chef knife and it was comfortable, but not so much on the Santoku knife. I am new to the Santoku Knife. I guess I would hold and use it more like a cleaver. The knives all feel pretty sharp out of the box, though like nearly all new knives, they need some fine-tuning to be really sharp.
Sure they are not a top-name branded knife set and if I was still a working line cook I would choose a different set, but as a casual home cook, I like these very much.
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Reviewed in the United States on February 2, 2023
★★★★★ 5
Great set of knives balanced between cost and quality
Size: 9-Piece, Style: Traditional Handle Design
I was in the market for a new set of knives because my old set, a long ago gift from my well intentioned parents, was serrated. I have also had some "fancier" knives over time as well including a Wushtof chef's knife and a Shun santoku knife. So when I started looking to replace my knife set, I started looking at various different brands.
My main goal was to find a balance between the quality of the knives and the cost, as in many cases, knives can get expensive pretty quickly. I also knew that I didn't really need the steak knives that often come with these sets because we hardly entertain, which means not a significant need for steak knives.
When I saw these, I thought "This can't be for real for this price..."
The knives work well, offering all the sizes and types I need for basic cooking. They are balanced fairly well, and while I could see some people not liking the plastic handles rather than wood, it doesn't really bother me. They are comfortable both in my grip and also in my wife's, who has smaller hand than I do. We find them easy to work with, from meats to fruits and veggies. They feel pretty solid, and appear to be full tang knives (all one piece of metal down through the handle, not welded together). I am pretty confident they will hold up for years with regular care, all at a price that is at or below many other introductory sets of knives.
The block is a basic block of solid wood, as you would expect with most knife sets. The holes for the knives aren't cut exactly to the blade sizes, but honestly it doesn't really matter that it's not exact, as all the knives are able to fit in the slots. The rubber feet keep it in place on the counter, and the block is sealed/laminated to stand up to standard kitchen wear and exposure.
I would recommend this set to anyone who is looking for a good balance between quality and cost, who needs a good set of knives to get them going in the kitchen and be functional, without breaking the bank.
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Reviewed in the United States on July 3, 2015
★★★★★ 4
Excellent set at an affordable price
Size: 18-Piece, Style: Traditional Handle Design
I'm not a chef, nor a knife aficionado. My wife and I both enjoy cooking and prepare our meals at least 5 days a week. We had a medium quality knife set that was around 13 years old. Due to improper cleaning (placed in the dishwasher most of the time) the blades dulled and rust spots appeared.
We decided that a high end set might be a nice gift to ourselves, and looked at the premium brands available. Being non-professionals I started to feel uncomfortable spending upwards of $300 on a knife set.
I have been watching these knives for a while now, and have read countless reviews, both good and bad to help me decide if these are worth getting. Having purchased other Amazon Basic items I felt that these were a safe bet, and if I were unhappy I could easily return them.
Upon arrival the knifes looked fantastic. They were very nicely packaged and easy to safely unpack. The block was in perfect condition (some reported cracks upon arrival). I inspected the knives and all appeared to be in perfect condition showing no dings, burrs or warping. After a quick hand wash and dry I placed them all in the block. I did have a slight issue with one of the steak knife slots not fully cleared and preventing the knife from sliding all the way down. I was easily able to clear it using an old steak knife as there was only a wood chip stuck in the slot.
I have used the knives about every day for the past 2 weeks and so far the are great to use. Very comfortable, super sharp and they clean up well. The only issue I have had is the Scissors come apart very easily, I've had them fall apart while using them twice already. I will see about adjusting the tension on the connection, but honestly the scissor is not very important to me and I don't mind replacing them with higher quality kitchen scissors if need be. Overall we are very happy with this purchase and I expect that with proper cleaning these knives will last a very long time.
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Reviewed in the United States on March 2, 2019
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